likelihood = probability 都是概率的意思
這兩個(gè)詞是客觀的可能性,可以表示有可能,也可以表示沒可能,比如：
The likelihood of getting the disease is very high.
The probability of getting 100 points is very low.
possibility 是有可能的意思
there is a possibility that something will happen.
注意,如果把上面的句子改成：
there is a probability that something will happen.
意思就由原來(lái)的某事可能發(fā)生,變成某事很可能發(fā)生.
也就是說(shuō)probability有兩種用法,一個(gè)和likelihood一樣,表示概率；一個(gè)比possbility意思相似但程度更深,表示很可能