标签：话题作文 话题 英语四级作文
字数：1200字
提要：Sleep-睡眠 英语作文网收集整理 Sleep It's clear that everyone needs to sleep. Most people rarely think about how and why they sleep, however. We know that if we sleep well, we feel rested. If we don't sleep enough, we often feel tired and irritable. It seems there are two purposes of sleep: physical rest and emotional and psychological rest. We need to rest our bodies and minds. Both are important ..