English in a Minute:Bend Over Backwards

发表时间:2018-07-12内容来源:VOA英语学习网

Bending over backwards is physically difficult. But what does this idiom mean?

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来自:VOA英语网 文章地址: http://www.tingvoa.com/html/20180712/English-in-a-Minute-Bend-Over-Backwards.html