treadn.步法;踏面;胎面花纹;鞋底v.踩;行走;践踏;(鸟类)交配
tread-wheeln.踏车
tread-water踩水; 停滞不前
tread peeling踏面剥离
tread segment花纹块
tread injures踏面损伤
tread contour胎面轮廓,胎面花纹
treadle valve踏板操纵的阀门
tread on eggsvi.如履薄冰(瞻前顾后;战战兢兢)
treadle grate踏综杆栅子
tread in steps踏着足迹