熬夜的英語短語叫做stay up，它是和動詞有關的，比如他經常熬夜，he often stays up他熬夜的非常晚，he stays up late他熬夜，所以呢他現在很困了，he stayed up last night and so he looks very sleepy，所以它是一個動詞，在句中常常作謂語。那麼經常熬夜呢，對身體是不利的，所以我們不應該經常熬夜，應該怎麼説呢
We shouldn't stay up late often because it's bad for our health.
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