n.牛，公牛，牛属动物
The ox is never woe , till he to the harrow go.
牛不耙地不知苦.
I'm willing to be an ox serving the country all my life.
我甘当孺子牛,终生为国家服务.
Seize a horse by the mane, and lead an ox by the nose.
马儿抓鬃牛牵鼻.
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