这种药水有点苦，但是很有用。

Zhè zhǒng yàoshuǐ yǒudiǎn kǔ, dànshì hěn yǒuyòng.

This medicine is a bit bitter, but very effective.

桌子上那杯不是水，是感冒药水。

Zhuōzi shang nà bēi bú shì shuǐ, shì gǎnmào yàoshuǐ.

That cup on the table is not water; it’s cold medicine.

医生给我开了一瓶咳嗽药水。

Yīshēng gěi wǒ kāi le yì píng késòu yàoshuǐ.

The doctor prescribed a bottle of cough syrup for me.