But we've finally traced this fancy perfume ingredient straight to whales' butts.

但是我们最终找到了这种奇特的香水成分，直指鲸鱼的臀部。

But we've finally traced this fancy perfume ingredient straight to whales’ butts.

但我们终于将这种奇特的香水成分直接追溯到鲸鱼的屁股。