或然律 meaning in English

law of possibility

Law of probability indicated that we would have to adopt one of them .
根据或然律，我们必将采取其中一个。
The improbable one has to justify either by showing it to be in accordance with opinion , or by urging that at times it is not improbable ; for there is a probability of things happening also against probability
不可能之事要么通过它与公众意见的吻合，要么通过证明在那个时候它并非不可能来获得许可，因为事物的可能性有时也会违背或然律。