unload pointer

例句：

1. 1. The truck driver unloadedthe cargo at the port.
   卡车司机在港口卸载了货物。
2. 2. The workers unloaded the crates from the ship.
   工人们从船上卸载了箱子。
3. 3. The trainwas unloaded at the station.
   火车在车站卸载。