a cow (countable noun)
A cow is grazing in the field.
一头牛在田野里吃草。
成年雌性家牛,尤指已产犊的；LFBOT:明亮快速蓝色光学瞬变现象的同义词；家养牛的雌性；其他大型哺乳动物的雌性,包括牛科、驼鹿、鲸、海豹、河马、犀牛、海牛和象；雄性称为“公牛”的哺乳动物的成年雌性
an adult female of domestic cattle
成年雌性家牛,尤指已产犊的
An adult female of the species Bos taurus, especially one that has calved.
LFBOT:明亮快速蓝色光学瞬变现象的同义词
LFBOT: Synonym of luminous fast blue optical transient.
家养牛的雌性
female of domestic cattle:
其他大型哺乳动物的雌性,包括牛科、驼鹿、鲸、海豹、河马、犀牛、海牛和象
A female member of other large species of mammal, including the bovines, moose, whales, seals, hippos, rhinos, manatees, and elephants.
雄性称为“公牛”的哺乳动物的成年雌性
mature female of mammals of which the male is called `bull'
楔子或制动器,用于止动机器或车辆
A chock: a wedge or brake used to stop a machine or car.
体型庞大且令人不快的女人
a large unpleasant woman
The farmer milks the cow every morning before breakfast.
农夫每天早饭前给母牛挤奶。
用法提示：这里的 cow 是名词，指成年母牛。
A cow can eat a lot of grass in one day.
一头母牛一天能吃很多草。
用法提示：cow 作名词，表示母牛。
We saw a black-and-white cow standing in the field.
我们看到一头黑白花的母牛站在田野里。
用法提示：此句中 cow 是名词，指一头母牛。
A cow is grazing in the field.
一头牛在田野里吃草。
The cow gives us milk.
这头牛给我们提供牛奶。
She milks the cow every morning.
她每天早上挤牛奶。
The farmer has ten cows.
农场主有十头牛。
heifer 特指还未生过小牛的母牛；成年并已生育的母牛仍用 cow，二者不可随意互换。
grammar · medium
易错句子I see cow.
正确表达I see a cow.
cow 是可数名词，单数形式前需要加不定冠词 a/an 或定冠词 the。
grammar · medium
易错句子There are many cow.
正确表达There are many cows.
cow 是可数名词，复数形式为 cows，表示多只母牛时需要加 -s。
grammar · medium
易错句子The cow is aggressive.
正确表达The bull is aggressive.
cow 特指母牛，成年雄性牛称为 bull（公牛）。描述攻击性动物时通常用 bull。
与母牛(cow)相对的雄性成年牛
挤牛奶
Every morning the farmer milks the cows.
每天早上农民挤牛奶。
奶牛
Dairy cows produce milk for consumption.
奶牛产奶供人们消费。
牛群
A herd of cows grazed in the field.
一群牛在田野里吃草。
牛牧场
The cows were led to the cow pasture.
牛被领到牛牧场。
牛粪
Cow manure is used as fertilizer.
牛粪被用作肥料。
摇钱树；稳定赚钱的生意或产品
The new smartphone became a real cash cow for the company.
这款新智能手机成了公司真正的摇钱树。
神圣不可侵犯的人或事物
In many organizations, the CEO is considered a sacred cow.
在许多组织中，CEO被视为神圣不可侵犯的人物。
大发雷霆；非常生气
Mom will have a cow when she sees the mess you made.
妈妈看到你弄的烂摊子会气疯的。
别激动，老兄！
When I accidentally spilled juice on his shirt, he said, 'Don't have a cow, man!'
当我不小心把果汁洒在他衬衫上时，他说：‘别激动，老兄！’
奶牛跳过了月亮。
Children often sing about the cow that jumped over the moon.
孩子们经常唱关于那头跳过月亮的奶牛的歌曲。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.