牛相关的英文单词cattle、bull、cow、ox、steer、calf、beef

cattle 牛（复数）
male cattle =bull 公牛
female cattle= cow 母牛
three cattle三头牛
some cattle 一些牛
one cow /one bull 一头牛(不能用cattle)
beef : meat from a cow肉牛的肉。 牛肉
calf :a young cow ,小牛/牛犊
Each cow normally produces only one calf at a time
通常情况下，一只母牛一次产一只小牛
the newborn calf fears no tiger 初生牛犊不怕虎
ox: 干重活的a bull that has been castrated ：（阉割的）公牛
steer : a bull that has been castrated ：（阉割的）公牛
bull : the male animal in the cow family 公牛(通常未阉割的)
cow:母牛/奶牛/肉牛/菜牛
buffalo水牛.asian buffalo和african buffalo亚洲水牛和非洲水牛
cattle是集合名词，不能加不定冠词a，
用作主语时，句子的谓语动词多用复数。
a herd of cattle 一群牛
The cattle usually graze in the grass land.
牛通常在草地吃草.