顺路

买完东西，顺便去公园散步。

mǎi wán dōngxi, shùnlù qù gōngyuán sànbù.

After buying things, he went for a walk in the park as well.

顺便问一下，你周末有空吗？

shùnlù wèn yīxià, nǐ zhōumò yǒu kòng ma?

By the way, are you free this weekend?