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英 ['ruːbɪk(ə)n; -kɒn] 美

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英语释义实用场景例句

n. 卢比孔河（意大利北部河流）

英语释意

1. the boundary in ancient times between Italy and Gaul; Caesar's crossing it with his army in 49 BC was an act of war

2. a line that when crossed permits of no return and typically results in irrevocable commitment