I flushed the pills down the lavatory.

我把药片丢进桶冲掉。

Install a flush toilet with small pondage.

安贮量小桶。

The lavatory won't flush.

桶不灵。

94. unstop a sink, toilet, drain, etc

疏通洗涤槽、桶、下道等.

The worst thing is that the water closet is clogged and when I flushed it, it overflew.

最糟糕是桶堵住了，我冲，就冒出来。