If you take up an offer or a challenge， you accept it.如果你接受了一个提议或挑战 你就是接受它
Maybe you should take up a hobby.也许你应该开始培养一个爱好
I won't take up any more of your time.我不再占用你的时间了。
I'd like to take up the point you raised earlier.我想继续谈一谈你早些时候提出的问题。
That's a matter for you to take up with your boss.这个问题你得去和你的老板进行交涉。
