I have to get to the bottom of this.

我必须把此事一查到底。

She got suspicious and decided to get to the bottom of it.

她起了疑惑，便决定弄个水落石出。

The young women were also determined to get to the bottom of the matter. Huang, the Priest, answered them all evasively.

后来村里的年轻女人也要追根问底了。 黄道士的回答却总是躲躲闪闪。

Arthas: We'll get to the bottom of this.

阿尔塞斯：我们将弄清它的真相。

We must get to the bottom of this matter.

我们一定要把这事弄个水落石出。