履带

lǚ dài liàn

履带链

caterpillar chain

lǚ dài shì tuō lā jī

履带式拖拉机

caterpillar tractor

gēn jù lún tāi lǚ dài de xīn xiān dù tā men jù wǒ men jǐn yī liǎng gè xiǎo shí de chē chéng

根据轮胎履带的新鲜度，他们距我们仅一两个小时的车程。

Based on the freshness of the tyre tracks, they were only one or two hours' drive ahead of us.

gāi mó xíng yǒu liǎng tiáo lǚ dài xì tǒng

该模型有两条履带系统。

There are 2 track systems in this model.