trestle-work

例句：

1. 1. The engineer is responsible for designing the trestle work.
   工程师负责设计桁架工作。
2. 2. The trestle work was constructed to support the bridge.
   桁架工作被建造来支撑桥梁。
3. 3. The trestle work needs to be reinforced to withstand heavy loads.
   桁架工作需要加固以承受重负载。