Strict vegetarians, who avoid meat, and vegans, who avoid all animal products, are also at risk of B12 deficiency.

严格的素食主义者不吃肉，绝对素食者禁食所有畜产品，这些人也有B12缺乏的危险。

youdao

Strict vegetarians, who avoid meat, and vegans, who avoid all animal products, are also at risk of B12 deficiency.

严格的素食主义者不吃肉，绝对素食者禁食所有畜产品，这些人也有B12缺乏的危险。

youdao