Bound to happen.注定的
bound to:必然, 不得不, 必須
The question is bound to come up at the meeting.
會上必然要討論這個問題。
I'm duty bound to visit my old aunt.
我有義務去探望年老的姑媽。
so I owe you favor.我還欠你們一個人情
owe:欠(債, 錢, 人情等)
I owe a lot to my wife and children.
我很感激我的妻子和孩子。
You can take your time to pay the debt you owe me.
你欠我的債可以慢慢還。
擴展:owe to:把 ... 歸功于 ...
His success does not owe to luck but ability.
他的成功應當歸功于他的能力而不是運氣。