- 我知道他的名字,但不知道他长什么样。
I know him by name, but not by sight.
- 玛莉亚既不知道他的名字,也不知道他的电话号码。
Maria knew neither his name nor his phone number.
- 你知道现在几点吗?
Do you know what the time is?
- 她知道您的电话号码吗?
Does she know your telephone number?
- 谁知道?
Who knows?
- 我知道你知道我知道。
I know that you know that I know.
- 盗亦有道。
There is honor even among thieves.
- 没有人会知道。
Nobody will know.
- 我什么都知道。
I know everything.
- 这是一道深奥的数学题。
This is a difficult math problem.