vi.

1. 踩，踏[Q][（+on/upon）]
   Beg pardon, did I tread on your foot, miss?

   对不起，小姐，我是不是踩了你的脚了？

2. 步行，走[Q]
   Rose was treading with care.

   罗丝小心翼翼地走着。

3. （雄鸟）与雌鸟交尾[（+with）]

vt.

1. 踩，踏；在……上面走
   Our ancestors trod this same path.

   我们的祖先曾经走过这同一条道路。

2. 踏成，踩出
   The sheep trod a path through the grass.

   羊群在草地上踩出一条路。

3. 践踏，蹂躏
   The serf was trod to death.

   这个农奴被蹂躏致死。

4. 走（步）；跳（舞）
5. （雄鸟）与（雌鸟）交尾

n.

1. 踩，踏；步态；足音[S]
   I heard his heavy tread up the stairs.

   我听到他走上楼梯的沉重的脚步声。

2. （楼梯等的）踏板[C]
3. （轮胎的）胎面；鞋底[C][U]
4. （汽车左右两轮的）轮距[C]

v.

1. walk in a specified way.
   ▸ (tread on) chiefly Brit. set one's foot down on top of.
   ▸walk on or along.
2. press down or crush with the feet.

n.

1. a manner or the sound of walking.
2. (also tread board) the top surface of a step or stair.
3. the thick moulded part of a vehicle tyre that grips the road.
   ▸the part of a wheel that touches the ground or rail.
4. the part of the sole of a shoe that rests on the ground.
5. the upper surface of a railway track, in contact with the wheels.