kowtow，knock head ；

[例句] 她们行完礼, 瑞珏 又牵了 海臣 到红毡上去叩头. Jui - chueh then brought forward her little son Hai - chen, to pay his respects.

[例句] 觉字辈和淑字辈的年轻人便分散开,个别的向自己的父母叩头,或者向伯父伯母和叔婶们请安. Grandchildren kowtowed to their parents, then bent the knee to their aunts and uncles.

tapping，clout，percuss ；

[例句] 他在讲话前先轻叩了一下扩音器. He gave a tap at the microphone before speaking.

[例句] 有人在轻叩窗户. There was a tap on the window.

[医]clickbeetle，elater ；

[例句] 不过每个表壳里都有个活叩头虫. There was a nice lively beetle inside each case.

[例句] 有明亮发光点的热带美洲的叩头虫. An object or a point from which light heat rays are emitted.

[医] epicrusis ；

rapper ；

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