ˈhinge on/upon sth
(of an action, a result, etc. 行动、结果等) to depend on sth completely 有赖于；取决于
Everything hinges on the outcome of these talks.
一切都取决于这几次会谈的结果。
hinge on/upon how, what, etc.…
His success hinges on how well he does at the interview.
他能否成功要看他在面试中的表现。
verb
[usually passive] ~ sthto attach sth with a hinge 给（某物）装铰
noun
a piece of metal, plastic, etc. on which a door, lid or gate moves freely as it opens or closes 铰链；合叶
The door had been pulled off its hinges.
门从铰链上扯下来了