大脑
word B2- brain
- cerebrum
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在深睡阶段，身体修复组织，大脑则清除白天积累的代谢废物。
而在快速眼动阶段，人往往会做梦，大脑忙着整理当天的记忆，把重要的信息储存起来。
晚上长时间盯着手机屏幕，屏幕发出的蓝光会让大脑误以为天还没黑，从而推迟入睡。
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