Therefore, for the third occurrence of this event, the number of previous occurrences is two.

因此，对于该事件的第三个实例，先前的实例数量为2。

youdao

Therefore, for the third occurrence of this event, the number of previous occurrences is two.

因此，对于该事件的第三个实例，先前的实例数量为2。

youdao