Whales: Giants of the Ocean

Whales: Giants of the Ocean

Whales are among the largest and most remarkable animals on Earth. These marine mammals live in oceans around the world, from warm tropical waters to the cold seas surrounding the poles.

Life Beneath the Surface

Although whales spend their lives in water, they breathe air through blowholes located on top of their heads. They must regularly return to the surface to breathe before diving again in search of food or traveling through the ocean.

Whales are warm-blooded, give birth to live young, and nurse their calves with milk. A thick layer of fat called blubber helps protect them from cold water and stores energy during long migrations.

Two Main Groups

Whales are generally divided into baleen whales and toothed whales. Baleen whales filter small animals from the water using flexible plates inside their mouths. This group includes blue whales, humpback whales, and gray whales.

Toothed whales use teeth to catch fish, squid, and other prey. Many of them also use echolocation, producing sounds and listening for returning echoes to understand their surroundings. Sperm whales, belugas, and orcas belong to this group.

The Blue Whale

The blue whale is the largest known animal to have ever lived. An adult can grow longer than a city bus and weigh well over one hundred tonnes. Despite its enormous size, it feeds mainly on tiny crustaceans called krill.

Communication and Migration

Whales communicate using clicks, whistles, pulses, and complex songs. Some sounds can travel across great distances underwater. Humpback whales are especially famous for their long, patterned songs.

Many species migrate thousands of kilometres each year. They often feed in cold, nutrient-rich waters before traveling to warmer regions where they mate and give birth.

Protecting Whales

Commercial hunting once caused severe declines in many whale populations. Today, whales also face threats from fishing gear, ship collisions, underwater noise, pollution, and changes to ocean ecosystems.

Conservation programs, safer fishing practices, protected habitats, and international cooperation can help whale populations recover. Protecting whales also supports healthier oceans because these animals play an important role in marine food webs and nutrient cycles.

Whales: Giants of the Ocean

Whales: Giants of the Ocean

Whales are among the largest and most remarkable animals on Earth. These marine mammals live in oceans around the world, from warm tropical waters to the cold seas surrounding the poles.

Life Beneath the Surface

Although whales spend their lives in water, they breathe air through blowholes located on top of their heads. They must regularly return to the surface to breathe before diving again in search of food or traveling through the ocean.

Whales are warm-blooded, give birth to live young, and nurse their calves with milk. A thick layer of fat called blubber helps protect them from cold water and stores energy during long migrations.

Two Main Groups

Whales are generally divided into baleen whales and toothed whales. Baleen whales filter small animals from the water using flexible plates inside their mouths. This group includes blue whales, humpback whales, and gray whales.

Toothed whales use teeth to catch fish, squid, and other prey. Many of them also use echolocation, producing sounds and listening for returning echoes to understand their surroundings. Sperm whales, belugas, and orcas belong to this group.

The Blue Whale

The blue whale is the largest known animal to have ever lived. An adult can grow longer than a city bus and weigh well over one hundred tonnes. Despite its enormous size, it feeds mainly on tiny crustaceans called krill.

Communication and Migration

Whales communicate using clicks, whistles, pulses, and complex songs. Some sounds can travel across great distances underwater. Humpback whales are especially famous for their long, patterned songs.

Many species migrate thousands of kilometres each year. They often feed in cold, nutrient-rich waters before traveling to warmer regions where they mate and give birth.

Protecting Whales

Commercial hunting once caused severe declines in many whale populations. Today, whales also face threats from fishing gear, ship collisions, underwater noise, pollution, and changes to ocean ecosystems.

Conservation programs, safer fishing practices, protected habitats, and international cooperation can help whale populations recover. Protecting whales also supports healthier oceans because these animals play an important role in marine food webs and nutrient cycles.

Whales: Giants of the Ocean

Whales: Giants of the Ocean

Whales are among the largest and most remarkable animals on Earth. These marine mammals live in oceans around the world, from warm tropical waters to the cold seas surrounding the poles.

Life Beneath the Surface

Although whales spend their lives in water, they breathe air through blowholes located on top of their heads. They must regularly return to the surface to breathe before diving again in search of food or traveling through the ocean.

Whales are warm-blooded, give birth to live young, and nurse their calves with milk. A thick layer of fat called blubber helps protect them from cold water and stores energy during long migrations.

Two Main Groups

Whales are generally divided into baleen whales and toothed whales. Baleen whales filter small animals from the water using flexible plates inside their mouths. This group includes blue whales, humpback whales, and gray whales.

Toothed whales use teeth to catch fish, squid, and other prey. Many of them also use echolocation, producing sounds and listening for returning echoes to understand their surroundings. Sperm whales, belugas, and orcas belong to this group.

The Blue Whale

The blue whale is the largest known animal to have ever lived. An adult can grow longer than a city bus and weigh well over one hundred tonnes. Despite its enormous size, it feeds mainly on tiny crustaceans called krill.

Communication and Migration

Whales communicate using clicks, whistles, pulses, and complex songs. Some sounds can travel across great distances underwater. Humpback whales are especially famous for their long, patterned songs.

Many species migrate thousands of kilometres each year. They often feed in cold, nutrient-rich waters before traveling to warmer regions where they mate and give birth.

Protecting Whales

Commercial hunting once caused severe declines in many whale populations. Today, whales also face threats from fishing gear, ship collisions, underwater noise, pollution, and changes to ocean ecosystems.

Conservation programs, safer fishing practices, protected habitats, and international cooperation can help whale populations recover. Protecting whales also supports healthier oceans because these animals play an important role in marine food webs and nutrient cycles.

Whales: Giants of the Ocean

Whales: Giants of the Ocean

Whales are among the largest and most remarkable animals on Earth. These marine mammals live in oceans around the world, from warm tropical waters to the cold seas surrounding the poles.

Life Beneath the Surface

Although whales spend their lives in water, they breathe air through blowholes located on top of their heads. They must regularly return to the surface to breathe before diving again in search of food or traveling through the ocean.

Whales are warm-blooded, give birth to live young, and nurse their calves with milk. A thick layer of fat called blubber helps protect them from cold water and stores energy during long migrations.

Two Main Groups

Whales are generally divided into baleen whales and toothed whales. Baleen whales filter small animals from the water using flexible plates inside their mouths. This group includes blue whales, humpback whales, and gray whales.

Toothed whales use teeth to catch fish, squid, and other prey. Many of them also use echolocation, producing sounds and listening for returning echoes to understand their surroundings. Sperm whales, belugas, and orcas belong to this group.

The Blue Whale

The blue whale is the largest known animal to have ever lived. An adult can grow longer than a city bus and weigh well over one hundred tonnes. Despite its enormous size, it feeds mainly on tiny crustaceans called krill.

Communication and Migration

Whales communicate using clicks, whistles, pulses, and complex songs. Some sounds can travel across great distances underwater. Humpback whales are especially famous for their long, patterned songs.

Many species migrate thousands of kilometres each year. They often feed in cold, nutrient-rich waters before traveling to warmer regions where they mate and give birth.

Protecting Whales

Commercial hunting once caused severe declines in many whale populations. Today, whales also face threats from fishing gear, ship collisions, underwater noise, pollution, and changes to ocean ecosystems.

Conservation programs, safer fishing practices, protected habitats, and international cooperation can help whale populations recover. Protecting whales also supports healthier oceans because these animals play an important role in marine food webs and nutrient cycles.

守护纯净童年：「开猿集市」儿童安全与 CSAE 防范承诺

发布日期：​​ 2025年8月31日

​发布者：​​ 「开猿集市」独立开发者

欢迎来到「开猿集市」。作为一名应用的设计者和守护者，我深知肩上负有的重大责任。我坚信，互联网应该是孩子们探索知识、激发创造力的安全乐园，而非风险之地。保护每一位小用户免受儿童性虐待与性剥削（Child Sexual Abuse and Exploitation, 简称CSAE）的侵害，是我不可妥协的核心准则和最高承诺。 在此，我郑重向所有用户、家长和监护人声明，我对任何形式的CSAE内容及行为采取零容忍政策。尽管「开猿集市」由我一人独立开发与运营，但我已倾注所有可能的技术与资源，构建了一套多层次、严格的安全防护体系。

​我的核心承诺​

我的使命是通过持续的努力，确保「开猿集市」成为一个：
  1. 1.​安全​：通过技术手段最大限度预防和阻断风险。
  2. 2.​透明​：清晰告知我的安全策略，并开放沟通渠道。
  3. 3.​负责​：对任何安全事件做出迅速、果断和合规的响应。

​我为保护孩子所采取的措施​

​1. 严格的内容审核机制​
  • •​技术筛查​：应用集成了业界公认的安全服务与框架，对所有用户上传的图片和视频内容进行自动化扫描与识别，坚决阻断任何有害信息的传播。
  • •​人工介入​：作为开发者，我本人将直接作为最终的安全屏障，对系统标记的可疑内容进行人工复审，并处理用户的每一次举报。我承诺对此投入最大的精力与关注。
​2. 安全至上的产品设计​
  • •​隐私优先​：应用严格遵循Google Play家庭政策及全球隐私法规（如COPPA）。​我绝不会收集、索要或存储儿童的个人信息​（如姓名、地址、学校等）。所有数据处理均以保护儿童安全为核心目的。
  • •​沟通限制​：应用内的所有交互功能都经过精心设计，旨在鼓励积极健康的互动，并从根本上杜绝未经监管的私下通信，极大降低网络诱骗的风险。
  • •​家长知情权​：我提供了清晰明了的功能说明和设置选项，帮助家长了解孩子如何使用应用，并与孩子一同讨论网络安全的重要性。
​3. 清晰、高效的举报与响应流程​
  • •​一键举报​：我在应用的醒目位置设置了举报入口。恳请每一位用户成为我的“安全合伙人”，一旦发现任何令人不安的内容或行为，请立即点击举报。​您的每一次举报都会被我亲自查看和处理。​​
  • •​依法上报​：根据法律要求，一旦我确认或合理怀疑存在CSAE内容，我将立即向美国国家失踪与受虐儿童中心（NCMEC）等国际权威机构提交报告，并全力配合任何必要的法律调查。这是我作为应用发布者必须履行的法律和道德义务。

​我需要您的帮助​

保护儿童是我们共同的责任。您的作用至关重要：
  • •​与孩子沟通​：请与您的孩子聊聊网络安全，告诉他们不要轻信陌生人，也不要分享任何个人信息。
  • •​善用功能​：请花几分钟时间熟悉应用内的隐私和安全设置。
  • •​立即行动​：如果您看到任何可疑内容，​请勿沉默，立即使用应用内的举报功能通知我。您的警惕是保护整个社区的关键。

​联系与举报​

我是这个应用的安全第一责任人。如果您有任何疑问、需要帮助，或希望报告任何安全问题，请通过以下方式直接与我联系：
  • •​专属安全邮箱：​​ ​dev.mdyb@gmail.com​ （请注明“开猿集市安全举报”）
  • •​通过应用内举报功能反馈。​​
我将持续学习、更新技术和策略，以应对不断变化的网络环境。「开猿集市」的初心是为孩子带来快乐与成长，我必将竭尽所能，守护这份纯净，不负您的信任。

灰姑娘(GO版)

故事背景（简化版）

  • 辛德瑞拉有个继母和2个姐姐，每天被她们欺负
  • 有一天，城里举行一场舞会。参加舞会需要礼服和鞋子。姐姐们都有，而辛德瑞拉没有。
  • 仙女用魔法给辛德瑞拉变出了礼服和鞋子（水晶鞋），并告诉辛德瑞拉魔法会在午夜12点后失效
  • 辛德瑞拉在城里见到王子
  • 午夜12点，辛德瑞拉不得已要马上离开，在仓皇间留下了一只水晶鞋。
  • 王子拿着水晶鞋寻找辛德瑞拉
  • 只有辛德瑞拉才能穿上水晶鞋，姐姐们穿上都掉下来
  • 灰姑娘和王子在一起，幸福地生活

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php按指定概率获得key

简介

php按指定概率获得key

<?php
function getkey()
{
    $pro = [
        'key1' =>80, //80%出现概率
        'key2' =>20, //20%出现概率
    ];

    $ret = '';
    $sum = array_sum($pro);
    foreach($pro as $k=>$v)
    {
        $r = mt_rand(1, $sum);
        if($r <= $v)
        {
            $ret = $k;
            break;
        }else{
            $sum = max(0, $sum - $v);
        }
    }
    return $ret;
}

echo getkey();

php生成总值固定随机数字数组

简介

php代码生成数字数组，所有数字总和固定

    private function _getRandomNumberArray($total, $times, $min, $max)
    {
        $data = array();
        if ($min * $times > $total) {
            return array();
        }
        if ($max * $times < $total) {
            return array();
        }
        while ($times >= 1) {
            $times--;
            $kmix = max($min, $total - $times * $max);
            $kmax = min($max, $total - $times * $min);
            $kAvg = $total / ($times + 1);
            //获取最大值和最小值的距离之间的最小值
            $kDis = min($kAvg - $kmix, $kmax - $kAvg);
            //获取0到1之间的随机数与距离最小值相乘得出浮动区间，这使得浮动区间不会超出范围
            $r = ((float)(rand(1, 10000) / 10000) - 0.5) * $kDis * 2;
            $k = round($kAvg + $r);
            $total -= $k;
            $data[] = $k;
        }
        return $data;
    }