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.
他反手一击把我截击的空中球打了回来(网球中)。
在历史小说里，这种武器被称为“撒手锏”，可以在不制强敌之时反手予以致命一击。 即使在中国当代兵法里，撒手锏仍然是核心内容。
Referred to in historical novels as an "assassin's mace", the weapon that can deal a fatal blow to otherwise superior enemies remains a core part of modern Chinese military doctrine.
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