奶牛的英文：
milk cow
dairy cow

参考例句：

Cow culling rate
奶牛淘汰率

The farm already has ten cows, but they’re buying another five.
农场已有十头奶牛，但他们准备再买五头。

Much of the value of the timothy/meadow fescue ley for milk production is attributable to its palatability
梯牧草;草地牛毛轮作草场对于饲养奶牛的主要价值，就在于其适口性好。

"If you sell the cow, you sell her milk too"
卖了奶牛就没有了奶

The cow is a useful animal.
奶牛是有用的动物。

The cow says "moo-moo".
奶牛“哞哞”叫。

The dairy is going to come in.
奶牛要产仔了。

The cow has a diseased udder
这奶牛的一只乳房有病。

They raise dairy cows, hogs and chickens, too.
他们还饲养奶牛、猪和鸡。

She put a loop of rope around the cow's neck.
她把绳圈套在了奶牛的脖子上。

milk是什么意思：
n. 牛奶，乳状物
v. 榨取；套出；挤奶

The milk is sweet.
这牛奶很新鲜。

independent air and milk transport milking machine
乳气分离式挤乳机

She soaked bread in milk.
她把面包浸在牛奶里。

cow是什么意思：
n. 奶牛，母牛
v. 威胁，恐吓

Stinking, wizened old cow!
老婊子，你不中吃。

In India, the cow is a sacrosanct animal.
牛在印度是神圣的动物。

We feed cows with grass.
我们喂牛吃草。

dairy是什么意思：
n. 制酪场；乳品店；乳牛场；乳牛，奶牛；奶制品
adj. 牛奶的；奶制的；乳品的；乳品业的

This is important to the development of dairy industry.
这对乳品业的发展很重要。

dairy barn scoop
奶牛棚用铲斗

A man who works in a dairy.
挤奶工人，乳品加工工人在牛奶公司或乳牛场工作的男子