原级：clack
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第三人称单数：clacks
第三人称复数：clacks
过去分词：clacked
过去式：clacked
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1. 盖板：circumferential velocity 圆周速度 | clacking 盖板 | cladding 装饰
1. In the neighborhood, the sound of mahjong tiles clacking against tables rises in waves as the games progress.