on the hook for
US /ɑn ðə hʊk fɔr/
UK /ɑn ðə hʊk fɔr/

1.
承擔責任, 負責
responsible for something, especially a debt or a difficult situation
:
•
After the accident, he was on the hook for all the repair costs.
事故發生後,他承擔了所有的維修費用。
•
If you don't pay, I'll be on the hook for the entire bill.
如果你不付錢,我就要承擔全部帳單。