These problems are all in your mind, you know.
你知道，這些問題都只是你的憑空想象而已。
Some people don't know when they're well off.
有些人身在福中不知福。
You'll like her once you get to know her.
你一旦了解了她就會喜歡她的。
Children can be difficult as we know only too well.
小孩子往往很難對付，對此我們都非常清楚。
He's really very human when you get to know him.
你若了解他，就知道他確實很有人情味。
There were a whole lot of people I didn't know.
有許多人我都不認識。
All I know is that she used to work in a bank.
我只知道她曾在銀行工作過。
I don't know what you're on about.
我不懂你在談什么。