take up on
phrasal verbtake somebody up on something
- to question somebody about something, because you do not agree with them
质问；查问 - I must take you up on that point.
那个问题我一定要找你问个明白。 - I’d like to take you up on what you said earlier.
我想和你谈谈你刚才说的话。
- I must take you up on that point.
- (informal) to accept an offer, a bet, etc. from somebody
接受（提议、打赌等） - Thanks for the invitation—we'll take you up on it some time.
谢谢你的盛情邀请，改日我们一定奉陪。
- Thanks for the invitation—we'll take you up on it some time.