long-boom wharf crane

例句：

1. 1.The long-boom wharf crane was used to lift heavy loads from the dock.
   长臂起重机被用来从码头上吊起沉重的货物。
2. 2. The long-boom wharf crane was essential for unloading cargo at the port.
   长臂起重机在港口卸载货物是必要的。
3. 3.The long-boom wharf crane was a marvel of engineering and technology.
   长臂起重机是工程和科技的杰作。