dock walloper

例句：

1. 1. The dock wallopers were busy loading and unloading cargo.
   码头操作员们忙着装卸货物。
2. 2. The dock wallopers ensured the smooth flow of goods across the river.
   码头操作员确保了货物在河流两岸的顺畅流通。
3. 3. The dock wallopers were responsible for maintaining the safety and efficiency of the shipping operations.
   码头操作员负责维护航运作业的安全和效率。