1PHRASAL VERB 接受,同意(提议或邀请) If you take someone up on their offer or invitation, you accept it. 接受,同意(提议或邀请)
Since she'd offered to babysit, I took her up on it. [VERB noun PREP.PREP. noun]
她既然主动提出帮助照看孩子,我也就同意了。
2PHRASAL VERB 追问;要求…解释 If you take a person up on something, you ask them to explain something that they have just said or done, for example because you think it is wrong or strange. 追问;要求…解释
She was making herself unnaturally casual. But he did not take her up on it. [VERB noun PREP.PREP. noun]