学校的锅炉坏了，今天没有热水供应。

The school's ___boiler broke down, so there's no hot water today.

我们家的锅炉坏了，需要修理。

Our ___boiler is broken and needs to be repaired.

这家餐厅的鱼缸里养着新鲜的螃蟹。

The restaurant keeps fresh crabs in the ___tank.