'I've stumbled upon this letter when I was cleaning out your drawer.'

我在收拾你抽屉时不经意间发现了这封信。

youdao

I've stumbled on articles that says its good programming practice to never return NULL.

我偶然发现的文章，说其良好的编程实践永远不会返回null。

youdao

Li: I've stumbled many times, in everything from designing an Internet browser to making a public speech.

李开复：我曾跌倒过许多次，从设计浏览器到做公共演讲，无所不包。

youdao

I've stumbled into the most amazing Wonderland.

WSJ: The Weekend Interview With Sebastian Thrun: What's Next for Silicon Valley?

I've just stumbled across a fascinating US government report on the problem.

BBC: IMF cyber attacks signal new spying era