on rare occasion

• adv. 很少(在个别情况下)

on rare occasion的用法和样例：

例句

用作副词 (adv.)

1. Such things rarely come down on you.
   这种事很少会落到你头上。
2. The old man seldom used his whip on his horse.
   老人很少用鞭子抽他的马。