mouthn.嘴；口；开口；河口v.不出声说；装腔作势地说；喃喃地说mouthparts口器mouth part口器mouth wash漱口剂mouth care口腔摄护mouth draw与嘴齐高的拉弓法mouth downadv.口朝下mouth parts口器mouth piece管头mouth-gag张口器mouth wedge楔形开口器