It is "probably the most dangerous time for adult Emperor penguins because they haven't got their waterproof suits on," he says. If they go into water, they are likely to die.
Photograph: Simon Hill
，更多细节参见下载安装 谷歌浏览器 开启极速安全的 上网之旅。
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// 测试用例（可直接运行验证）