tready条约
treadn.步法;踏面;胎面花纹;鞋底v.踩;行走;践踏;(鸟类)交配
tread as on eggsvi.如履薄冰(瞻前顾后;战战兢兢)
tread the ground步行
tread out a fire把火踏灭
Tread Way Bridge车辙桥
treadle air pump脚踏气泵
tread under feet践踏; 压迫; 虐待; 轻视
tread on the gas物体油门; 加速; 赶紧
treadle-machinen.脚踏印刷机
tread binary tree穿线二叉树
treadle type plow键式犁