Why are you always all thumbs?

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Why are you always all thumbs?

你怎么总是苯手笨脚的？

单词thumb，拇指，拇指被认为是十个手指中最不灵活的。所以由此意引申，词组be all thumbs，英文的解释是“Lacking physical coordination, skill, or grace; clumsy”，即，缺乏身体协调的能力、技巧，缺乏优雅的风范，笨拙的，用“苯手笨脚”这个成语正合适。这个词组还可以写成，be all fingers and thumbs。

例句：I was all fingers and thumbs this morning, and could hardly button up my shirt.
今天早上我笨极了，差点连衬衫都扣不上了。