I stumbled and sprained my ankle.

我摔了一跤，把脚脖子扭了。

《牛津词典》

I stumbled across an app.

我偶然发现一个应用程序。

youdao

I stumbled over a rock.

我在石头上绊了一下。

《牛津词典》

I stumbled and put "built" in the wrong place when I read it. It's a strange line.

我刚刚有点结巴，把建筑,念错了位置，这句很奇怪。

耶鲁公开课 - 现代诗歌课程节选

I stumbled out in to the black night sobbing, my legs wobbly from fear.

那一夜，我战战兢兢跌跌撞撞，地走出家门，哭着。

耶鲁公开课 - 1945年后的美国小说课程节选

"I stumbled, my legs gave out on me and I got over-excited, " said Demus.

BBC: France's Christine Arron won the 100m in Oslo

It was following one of these trails that I stumbled over a site I'd never heard of-- Andreas.com.

FORBES: Opportunity Knocking

Utterly unprepared, I stumbled to the podium and looked out over a sea of reps, managers, and executives.

FORBES: Giving Away Credit; Is It Worth It?