n.無(wú)必然性的事物；未必有之事
The state of being unlikely or improbable; improbability. 不可能不大可能或不可能的狀態(tài); 不可能性
Don't worry about such improbabilities as floods and earthquakes. 像洪水、 地震這類不大可能發(fā)生的事，就不要擔(dān)心了。
