我们在超市逛了两小时。

Wǒmen zài chāoshì guàng le liǎng xiǎoshí.

We walked around the mall for two hours.

我们准备去逛商场。

Wǒmen zhǔnbèi qù guàng shāngchǎng.

We're prepared to stroll around the mall.

你们还要逛多久啊？

Nǐmen hái yào guàng duōjiǔ a?

How much long do you want to walk around?