towing arch

例句：

1. 1. The towing arch was designed to support the weight of the trailer.
   拖车拱的设计是为了支撑拖车的重。
2. 2. The towing arch is a crucial part of the construction process.
   拖车拱是建筑过程中至关重要的一部分。
3. 3.The towing arch was used to lift the heavy equipment onto the trailer.
   拖车拱被用来将重型设备吊装到拖车上。