They're the garbagemen of the lake.

他们是湖里的清洁工。

But do you have the garbagemen bringing you stuff now?

但你让搬运工把东西搬来了吗？

There's the bell the garbagemen ring, letting you know when it's time to come down and throw out your trash.

垃圾工会按响铃声，让你知道什么时候该下来扔垃圾。