Vegans consume no animal products and are susceptible to vitamin B12 deficiency.
Vegans consume no animal products and are susceptible to vitamin B12 deficiency.
素食者不吃任何动物性食物，易患维生素B12缺乏症。
Vegans consume no animal products and are susceptible to vitamin B12 deficiency.
素食者不吃任何动物性食物，易患维生素B12缺乏症。