hinge on

US /hɪndʒ ɑːn/
UK /hɪndʒ ɑːn/
"hinge on" picture
1.

取决于, 有赖于

to depend entirely on something

:
The success of the project will hinge on his decision.
项目的成功将取决于他的决定。
Everything seemed to hinge on that one crucial piece of evidence.
一切似乎都取决于那份关键证据。