如果钢格板是Q235材质可以吗 » If steel grating is Q235 material can do 何时去睡觉的 » go to sleep when the 宝贝，原谅我，很久你都不在我的身边，我是很想你，但我却不能说出口.
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Dolphins, as well as other marine animals, shut down one hemisphere of the brain when they go to sleep.
海豚，还有其他一些海洋动物，它们睡眠时会关闭大脑的一个半球。
For example, dolphins, as well as other marine animals, shut down one hemisphere of the brain when they go to sleep.
例如，海豚以及其他海洋动物，在睡觉时会关闭半边大脑。
They get over the worry, and become confident that when they go to bed, they will sleep.
他们克服了忧虑，当需要睡眠时变得很有信心，这样也就睡着了。
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