treadn.步法；踏面；胎面花纹；鞋底v.踩；行走；践踏；(鸟类)交配tread revision踏面修正treadle hammer踏锤tread shoulder胎肩tread the deck上船tread wrapping胎面缠绕tread compound[化] 胎面胶treading water踩水tread-softlyn.刺叶草tread patterns花纹tread arc width胎面弧宽