Rubicon

剑桥词典

 cross the Rubicon

to do something that you cannot later change and will strongly influence future events
破釜沉舟；下重大決心；採取斷然行動
Most EU states have crossed the Rubicon and adopted the euro . 大多數的歐盟國家已經下了決心採用歐元。 返回 Rubicon