hinge on/uponsth
—phrasal verbwithhingeverbuk/hɪndʒ/us/hɪndʒ/
If one thinghingeson another, the first thingdependson the second thing or is veryinfluencedby it.
依靠，取决于
The prosecution'scasehingedon theevidenceof awitnesswhodiedbefore thetrial.控方的案子取决于一位证人的证词，而该证人已在审判前死去。
If astoryorsituationhingeson anideaorsubject, itdevelopsfrom thatideaor that is the mostimportantsubjectin it.
（故事或情况）围绕着…展开
The film'splothingeson acaseofmistakenidentity.该电影的情节围绕着一宗身份误认案展开。