v.噼啪响；n.噼啪声； 变形： 复数：clacks过去式：clacked过去分词：clacked现在分词：clacking第三人称单数：clacks 英英释义： clack[ klæk ]n.a sharp abrupt noise as if two objects hit together; may be repeated同义词：clapa simple valve with a hinge on one side; allows fluid to flow in only one directio