Most parts that land into the ocean, there aren't reusable parts.

大多数落入海洋的部分都是不可重复使用的。

19. Slippers They're not reusable, so if you leave them in the room, they'll get thrown away.

19. 拖鞋 它们不可重复使用，所以如果你把它们留在房间里，它们会被扔掉。