He had been using the vehicle to tow his work trailer..
他一直用那辆车来拖他的活动工作室。
《柯林斯英汉双解大词典》
2
The devices direct oncoming air around the trailer in such a way that it increases pressure in the area of the slipstream immediately behind the vehicle.
该装置将迎面而来的空气引向拖车周围，可立即增加车后部滑流压力。
3
L a motorcycle rider is any person riding on a motorcycle or in a sidecar or trailer attached to such a vehicle.