英语翻译Sometimes people feel sleepy.They can't stay interested

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/05 16:42:03

英语翻译
Sometimes people feel sleepy.They can't stay interested in what they are doing and they open their mouths wide quickly.We call this a yawn.It makes a pretty silly face.Why do people do it?Scientist do not know much about yawns.But they have some ideas.Our bodies get tired.Our minds get tired,too.A tired mind needs air.So we yawn.The quick yawn takes in air.And the air wakes up our mind.But not for long.Watch out!Here comes another yawn.

有时人们会感到困倦.他们不能对所做之事保持兴趣,很快就大张着嘴抒发倦意.我们管这个叫打哈欠.打哈欠会让我们看起来很愚蠢,但为什么人们还要这么做呢?科学家对它也知之甚少.但他们还是有了一些了解.我们的身体会感到疲劳,大脑也一样.疲劳的大脑需要新鲜空气,我们用打哈欠的方式来获取空气.打哈欠令空气进入体内,这些空气激活了我们的大脑.但这种效果并不长久：看吧!另一个哈欠又来啦.

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