The part of a truck, trailer, or freight car designed to carry loads.
平板卡车、拖车或载重运输汽车的一部分
The tractor took up the slack and pulled the trailer out of the mud.
拖拉机拉紧拖缆把拖车从泥中拉了出来。
That's a car with a trailer hitched on to it at the back of the road.
路上有一辆背后挂着一辆拖车的汽车。