1. The supercargo is responsible for overseeing the loading and unloading of cargo on the ship.
货物管理员负责监督船上的货物装卸工作。

2. The supercargo ensured that the cargo was properly secured before departure.
货物管理员确保船只在启航前货物被适当固定。

3. The supercargo has the authority to change the destination of the cargo if necessary.
若有需要，货物管理员有权更改货物的目的地。