vi.

1. 坚持；固执[（+in/with）]
   Why do you persist in writing these things?

   你为什么要坚持写这些东西呢？

2. 持续；存留
   The storm persisted for a week.

   暴风雨持续了一个星期。

vt.

1. 坚持说，反复说[Y][+that]
   He persisted that he had nothing to do with robbery.

   他坚持说他与抢劫毫无关系。

v.

1. continue firmly or obstinately in an opinion or a course of action in spite of difficulty or opposition.
2. continue to exist.