改水 [－－]

Jyutping goi2 seoi2
Pinyin gǎi shuǐ

Definitions (Wiktionary)
  1. verb
    to improve the water quality

改水 [－－]

Jyutping
Pinyin gǎi shuǐ

Definitions (CC-CEDICT)
  1. to improve water quality