cross the RubiconEFFECT/INFLUENCEto do something that will have extremely important effects in the future and that you cannot change 破釜沉舟;断然采取行动
Examples from the Corpus
cross the Rubicon• But tormented though I was with guilt and self-doubt, I knew I had crossed the Rubicon.• On the way to political union we are now crossing the Rubicon.• General Bourbollon's troops are gathering around the capital; he's prepared to cross the Rubicon.
Examples from the Corpus
Rubicon• On the way to politicalunion we are now crossing the Rubicon.
OriginRubicon
(1600-1700)LatinRubico river in northern Italy which Julius Caesar crossed in 49BC, setting off a civil war