草饲奶制品和肉类里某些营养素和健康脂肪的含量更高。
Grass-fed dairy and meat have been shown to be higher in certain nutrients and healthy fats.
他们亲自了解有关奶牛的健康和营养知识，以及制作黄油，奶酪和其他乳制品的技术。
They learn first hand about the health and nutrition of dairy cattle, as well as the science of making butter, cheese, and other dairy products.
严格的素食主义者可从精加工的谷物，强化豆制品或含有维生素b - 12的营养补品中获得。
Vegans can get vitamin B-12 from some enriched cereals, fortified soy products or by taking a supplement that contains this vitamin.
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