n.突破，突破性进展；关键问题的解决
It is a major technological breakthrough. 这是一次重要的技术突破。
He finally has a breakthrough in his creation. 他终于在创作上有了突破。
The medical breakthrough proves that guzzling ale is not the only reason why men develop saggy stomachs. 医学上的这一突破表明，男人们的啤酒肚并不完全是因为狂饮啤酒而造成的。
突破发展
