odds: 机会,可能性;成功的可能性[(+on/against)][+(that)] His odds were very poor after he sprained his wrist. probability : 可能性,或然性[U][S1][(+of)][+that] The probability of making a mistake increases when you are tired. 你累的时候犯错误的可能性就会增加. odds相对probability 来说强调机会更小一些,另外就是两个词在使用时有所差别,见上下对比.