客人不断地讨价还价。

Kèrén búduàn de tǎojià huánjià.

The customer kept haggling.

老板最讨厌人讨价还价。

Lǎobǎn zuì tǎoyàn rén tǎojià huánjià.

The boss hates it most when people haggle.

我们在市场上讨价还价买东西。

wǒ men zài shì chǎng shàng tǎo jià huán jià mǎi dōng xī.

We bargain in the market to buy things.