trailer landing gear

例句：

1. 1. The truckhad a trailer attached to it, whichwas used for transporting cargo.
   这辆卡车挂有一个拖车，用于运输货物。
2. 2. The towinggear on the back of thecar is designed to support heavy loads.
   汽车后部的牵引装置设计用来支撑重载。
3. 3. The towing hook was securely fastened to the trailer, ensuring a smoothjourney.
   牵引钩被牢固地固定在拖车上，确保了旅途的平稳。