if you are on the brink of sth, you are almost in a very new, dangerous or exciting situation
濒于崩溃 / 战争 / 死亡 / 灾难
on the brink of collapse/war/death/disaster
Scientists are on the brink of making a major new discovery.
He's pulled the company back from the brink (= he has saved it from disaster) .
the extreme edge of land, for example at the top of a cliff or by a river
the brink of the precipice
to be very close to a very unpleasant or dangerous situation
The country is teetering on the brink of civil war.