顺便 順便

顺便问一句，你今晚有空吗？

shùn biàn wèn yī jù， nǐ jīn wǎn yǒu kòng ma？

By the way, are you free tonight?

顺便说一句，你最近见过他吗？

shùn biàn shuō yī jù， nǐ zuì jìn jiànguò tā ma？

By the way, have you seen him lately?

我会在回家的路上顺便去邮局。

wǒ huì zài huí jiā de lù shang shùn biàn qù yóu jú。

I'll drop by the post office on the way home.