Probability is a measure of the expectation that an event will occur or a statement is true. Probabilities are given a value between 0 (will not occur) and 1 (will occur).
1. There is no probability of his success. 他不可能成功。
2. History does not relate whether his friend accepted his medical help, but in all probability he did. 他的朋友是否接受了他的药物治疗，历史没有记载，但很可能接受了。
3. Although scientists still cannot predict earthquakes, they are learning a great deal about how the large plates in the earth's crust move, the stresses between plates, how earthquakes work, and the general probability that a given place will have an 尽管科学家们仍无法预测地震，但对地壳中的大板块如何移动，板块间的压力如何，地震如何发生，某地区发生地震的一般概率为多少，他们正了解得越来越多。