Sometimes people have heart attacks and never know it.

有时人们心脏病发作却对此全然不知。

youdao

We all desperately want to get it right and never know for sure whether we are.

我们都拼命的想做对的事却永远不确定我们做的到底对不对。

youdao

You can stick your phone in your pocket and never know it’s there, but can you do the same with an iPad or TouchPad?

手机可以放在口袋里，感觉起来什么都没有一样，但是平板电脑能做到吗？

youdao

"The court of appeals is where policy is made, and I know this is on tape and I should never say that because we don't make law.I know,I know.

VOA: special.2009.05.30

Because what we want to know is what is like to be permanently dead, and these people were never permanently dead.

因为我们想知道的是,永久死去是什么样的,而这些人并没有永久地死去

耶鲁公开课 - 死亡课程节选

Something is usually said about Kafka in connection with Wise Blood, but I have never succeeded in making my way through The Castle or The Trial, and I wouldn't pretend to know anything about Kafka.

经常有人说到卡夫卡,与《慧血》之间的联系，但我从来没有成功地,读懂《城堡》或者《审判》,我不会假装我了解卡夫卡的一切。

耶鲁公开课 - 1945年后的美国小说课程节选

None of his players get a chance to overpower him you and never know if you're going to be in the team or not.

BBC: Everton ready to win Cup - Moyes

Facebook officials also emphasize that while advertisers can market to specific users, they don't receive the data that was used to make the selection and never know the actual names of the people they've reached.

CNN: How you help Facebook make billions

In simplest terms, you never know what might happen to your job, and you never know what opportunities are out there waiting for you.

FORBES: Lead with Your Strengths and Build Your Personal Brand Online