Correct 酪素 / lào sù / Strokes Definition casein (milk protein) Example As a Noun casein 1 Lào sù 酪素 yuán 原 Copy Pinyin Sentence caseinogen 2 Lào sù 酪素 jiāo 胶 Copy Pinyin Sentence casein glue 酪素 - Chinese Dictionary Definition casein (milk protein) casein (milk protein)