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Why is it that a bucket of water soon becomes putrid, but frozen remains sweet forever?
为什么一桶水放久了要臭, 而冻冰以后,却永远甘美 呢 ?
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He took off his overcoat to cover the water tank and prevent it from freezing.
脱下大衣盖在水箱上,以防止冻冰.
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