r by chance
adv. 也许, 大概
1. Perhaps we should try a different restaurant tonight.
或许我们今晚应该尝试一家不同的餐厅。
2. She is not here yet; perhaps she is stuck in traffic.
她还没有来;或许她遇到交通堵塞了。
3. Perhaps it will rain tomorrow, so take an umbrella.
或许明天会下雨,所以带把雨伞。