His friend asked him, "You are not a fish. How do you know they are happy?"

他的朋友问他：“你不是鱼。怎么知道鱼的快乐？”

youdao

"They were married, you know," explained Wendy, "and what do you think they had?"

“你们知道的，他们结婚了。”温迪解释说，“你想他们有什么？”

youdao

Do you know how they catch crabs?

大家知道人们是怎样捕捉螃蟹的吗？

youdao

And one day you want to go to the cemetery or something, you can't do it because you don't know where they are.

VOA: special.2010.02.01

But, you know why not do something a little special, little different, and they decided instead to use lithium.

但是你懂的，为什么不做的更特殊，更与众不同一些呢？

麻省理工公开课 - 化学原理课程节选

And it's pretty expensive to do so because I think they know you need to do it.

这样做很贵，因为我想他们知道你需要这么做。

公共交通更方便 - SpeakingMax英语口语达人

For example, if someone from "IT support" calls you and asks for your password so they can help fix your problem, how do you know they haven't called everyone else in the building first until they found you who has really got a problem?

BBC: Viewpoint: How hackers exploit 'the seven deadly sins'

Do you know whether they intend to do joint questions and answers?

WHITEHOUSE: Press Briefing

Mr. RICK OLTMAN (Californians for Population Stabilization): Do you know who they are giving these ID cards to?

NPR: San Francisco to Issue IDs to Immigrants