Something fell to the floor with a clunk.

有东西掉在地上，发出沉闷的声音。

I heard a clunk on the roof. Must be the reindeer.

我听到屋顶上有声音。肯定是驯鹿在屋顶上。

The loud clunk vibrated the boat temporarily, before water started to trickle slowly over the stern.

声像巨大的撞击立刻震动了小船，之后水开始慢慢地漫过船尾。

When the... when the wheel comes to a halt, when it's no longer rotating, you better believe it, then the thing will go clunk.

当车轮停止的时候，它就不再转动了，你们最好相信，它们就会倒下。