I've known him for years, but I still don't know what pushes his buttons.

我已认识他多年，可还是摸不透他的脾气。

《牛津词典》

I don't know what I've done to upset him, but if looks could kill...

我不知道做了什么惹他生气了，他那样子简直吓死人。

《牛津词典》

I don't know what I'm going to do yet—I've just this minute found out.

我还不知道我要做什么—我刚刚发现。

《牛津词典》

Your name is in the title, 'cause I've learned, and Don't dedicate time, energy And poems To what's not built to last.

VOA: special.2009.04.17

What can I conclude, now I've concluded that the strategies 68 through 100 essentially don't exist or have been deleted.

目前为止我们能得到什么结论,68到100的选项不存在了,或者说已经被剔除了

耶鲁公开课 - 博弈论课程节选

I've passed through Grand Central Station when filming was happening. I don't know what they were filming though.

有一次我从那儿经过，正好有部电影在拍。但我不知道他们在拍什么电影。

电影里的中央车站 - SpeakingMax英语口语达人

Guard our own home fronts, I mean that's to me - I don't know, I don't know what they've accomplished by going over there.

NPR: Economic Check-Up in Broken Bow

"I don't think I've misunderstood the bill, and I don't think I've misunderstood what the deputy minister wants, " he said.

BBC: Keith Towler

Of course, what I've said tonight matters little if we don't come together to protect our most precious resource: our children.

BBC: State of the Union: Obama pledges to reignite economy