社会不知道怎样处置惯犯。
Society does not know how to deal with hardened criminals.
现在知道你们的工作保住了，可以放心了。
You'll be relieved to know your jobs are safe.
我知道马克迟到是出了名的。
I'm aware of Mark's reputation for being late.
他们只是大概知道那个地方的位置。
They had only a vague idea where the place was.