无水

xiàn dài wú shuǐ xiǎo biàn qì yǒu zhù yú huán bǎo

现代无水小便器有助于环保。

Modern waterless urinals can help to save the environment.

wú shuǐ suān

无水酸

anhydrous acid

wú shuǐ róng jì

无水溶剂

anhydrous solvent