improbability

n (a) [U] state of being improbable 不大可能; 未必能发生: the improbablity of his being recaptured 对他再行拘捕之不大可能. (b) [C] event that is improbable 不大可能的事; 未必能发生的事: Don't worry about such improbabilities as floods and earthquakes. 像洪水、 地震这类不大可能发生的事, 就不要担心了.

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