be all fingers and thumbs从字面上看是“到处是手指和拇指”，真实含义是笨手笨脚。

【例句】
Mr. Zhang knocked over three beautiful vases and seemed to be all thumbs.
张先生打翻了三个漂亮的花瓶，看来是个笨手笨脚的人。

Whenever a man is required to do a little sewing, he seems to be all thumbs.
要一个男人做点针线时，他总是显得笨手笨脚的。