1. bound to
people are bound to notice
There’s bound to be something that you like.
You're bound to feel nervous about your interview.
英語 "という言葉zobowiązany do czegoś"(bound to)集合で発生します。
lexical pattern 22. under an obligation
The court held that the bank was under an obligation to return the deposit.
you are not under an obligation to do it
3. required to