他的裤子松了，因为他的腰围最近缩小了两英寸。
His pants are loose because his waistline has shrunk by two inches recently.
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waistline英 /ˈweɪstlaɪn/|美 /ˈweɪstlaɪn/
解释
waistline 是由 waist（腰部）和 line（线条）组成的复合词，字面意思是"腰部的线条"，引申为"腰围"的意思。
His pants are loose because his waistline has shrunk by two inches recently.
waistline 是由 waist（腰部）和 line（线条）组成的复合词，字面意思是"腰部的线条"，引申为"腰围"的意思。
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