1. But Harvard scientists fed two groups of mice either meat or sweet potatoes and prepared the items differently: either whole or pounded, raw or cooked-to create a variety of diets. 但哈佛科学家为了创造使膳食多样化，分别给两组老鼠喂食没切碎的肉和土豆及捣碎的肉和土豆。
2. Dear EarthTalk: I don't eat meat, for a variety of ethical and environmental reasons, and I'd rather not feed it to my cat, either. 亲爱的EarthTalk：由于道德和环境等一些原因，我不吃肉，并且我也愿意让我的猫也这样。
3. Vitamin B12 is found in a variety of foods, including dairy, eggs, fish and meat. 科学发现维他命B12存在于多种食物，包括奶制品，蛋鱼肉类。
4. Young children should receive a variety of foods including meat, poultry, fish or eggs as often as possible. 幼儿应尽量经常食用包括肉、禽、鱼或蛋在内的多种食品。
5. Increase the amount and variety of seafood consumed by choosing seafood in place of some meat and poultry. 多食用各种海鲜，用海鲜取代一些肉和家禽。
