破天荒: epoch-making; occur for the first time; be unprecedented; without precedent 短语和例子破天荒的大事 an epoch-making event; the biggest event without any precedent
大事: 1.(重大的事) great event; major event; important matter; major issue 短语和例子关心国家大事concern oneself with affairs of state; 头等大事 a matter of prime or paramount importance; 这本新辞典是今年文化界的大事。 the new d