他来了一个快速的反手击。
反手击球如球拍等的一击或一动，手背向外，胳膊向前移动。
A stroke or motion, as of a racket, made with the back of the hand facing outward and the arm moving forward.
而且你要是期待那个人能够很快的就学到个新的口音的话，就好像期待没有打过网球得人很快的学会反手击拍。
To expect someone to quickly learn a new accent would be like expecting them to quickly master a perfect backhand swing if they've never played tennis before.
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