Bǔchōng / wéishēngsù / A / yǒuzhùyú / yùfáng / yóu / yíngyǎng / bùliáng / yǐnqǐ / de / yè / mángzhèng。

补充维生素A有助于预防由营养不良引起的夜盲症。

Taking vitamin A supplements can help prevent night blindness caused by malnutrition.