treadn.步法;踏面;胎面花纹;鞋底v.踩;行走;践踏;(鸟类)交配
treadboardn.踏板
tread wear胎面花纹磨损
tread base胎面底层
tread road铁路
tread band车轮触轨面
tread awayadj.弄错(失败)
tread awryv.失败;出错
treadwheeln.踏车
tread void胎面花纹沟
tread axis轨距中线