1
drive a tractor trailer
He drives a tractor trailer across the country.
他开着拖拉机拖车穿越全国。
拖拉机拖车；牵引式挂车
先理解核心含义，再看它在真实句子里的用法。
拖拉机拖车；牵引式挂车
a large truck consisting of a tractor unit and a trailer, used for transporting goods
He drives a tractor trailer across the country.
他开着拖拉机拖车穿越全国。
常见于美式英语
由牵引车和挂车组成的卡车
a truck consisting of a tractor and trailer together
The driver carefully backed the tractor trailer into the loading dock.
司机小心翼翼地将拖拉机拖车倒进装卸码头。
A long tractor trailer passed us on the highway, carrying freight.
一辆长长的拖拉机挂车在高速公路上从我们身边驶过，载着货物。
They are loading the tractor trailer with boxes of electronics.
他们正在往拖拉机拖车上装载一箱箱电子产品。
He drives a tractor trailer across the country.
他开着拖拉机拖车穿越全国。
描述拖车事故或动作。
The tractor trailer jackknifed on the icy road.
拖拉机拖车在结冰的路上折刀了。
There are six tractor trailers parked at the depot.
停车场有六辆拖拉机拖车。
Not this
He bought tractor trailer.
Use this
He bought a tractor trailer.
车头带挂车是可数名词短语，单数形式前必须加不定冠词a。
Not this
He owns a tractor and a trailer.
Use this
He owns a tractor trailer.
当表示一辆牵引式挂车时，tractor trailer是复合名词，不应拆开用and连接。
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通常指卡车头加挂车
Dictionary facts from ECDICT, WIKTIONARY.