一个软式小飞艇顺风飞行要2个小时,逆风要5个小时.
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A blimp travels 2 hours with the wind and 5 hours against it
A blimp travels 2 hours with the wind and 5 hours against it
英语人气：983 ℃时间：2020-05-01 07:02:04
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