to fall because you hit your foot on something, or to make someone fall by putting your foot in front of the other person's foot

I'm terribly sorry. I didn't mean to trip you up. 实在对不起，我不是有意要绊倒你的。

She tripped up on the rug. 她在小地毯上绊了一下。

to make a mistake, or to cause someone to make a mistake

The exam went quite well, until I tripped up on the last question. 考试进展得很顺利，只是最后一道题把我难住了。

In the interview, they kept trying to trip me up. 采访时，他们一直想方设法让我说错话。