一只挪威红牛正在利勒哈默尔的一处小牛奶场里的垫子上小憩。

A Norwegian red cow naps on a mat at a small dairy co-op south of Lillehammer, Norway.

youdao

奶牛必须每年哺乳才能产生牛奶，生下的小牛中只有一半是母牛。

Dairy cows must calve every year to keep producing milk, and only half their offspring will be female.

youdao

这种不健康的脂肪来自动物性食物，如牛肉、猪肉、小牛肉、牛奶、蛋类、奶油和奶酪等。

You will find this unhealthy fat in foods that come from animals. Beef, pork, veal, milk, eggs, butter, and cheese contain saturated fat.

youdao