在击球（各种小型击拍用球）时能发出咚咚的击鼓声，并可用于水面游戏。
When the utility model is used for hitting balls (various miniature balls for hitting by a racket), dub drum sound can be generated. The utility model can be used for games on water surface.
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.
他对准球猛地挥拍一击。
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