tread

If the tread on your car's tires is worn down, it becomes dangerous to drive on wet roads.

(Chinese) 如果你汽车轮胎的胎面磨平了，在潮湿的道路上行驶会非常危险。

The mountain climbing boots have a deep tread for better grip on slippery rocks.

(Chinese) 这种登山靴有很深的防滑纹路，以便在湿滑的岩石上获得更好的抓地力。