You cannot flay the same ox twice一头牛不能剥两次皮。
The cow that's first up gets the first of the dew.早起母牛先得露。
Not all butter that the cow yields.母牛所产的未必全是黄油。
Many good cows have evil calves.很多好母牛，会生坏小犊（虎父生犬子）。
You cannot sell the cow and sup the milk.凡事难两全。鱼与熊掌不可兼得
Old oxen have stiff horns.牛老角硬。
The ox is never woe, till he to the harrow go.挂耙去耕地，牛才知辛苦。
The ox when weariest treads surest.牛困走得稳
The cow knows not what her tail is worth until she has lost it.有时不爱惜，失后徒叹息。
a young ox learns to plough from an older one：小牛向老牛学习耕地（喻老手和新手间的师徒关系）
An ox is taken by the horns, and the man by the tongue. 牛因角被执，人因舌陷身。
He that will have his farm full, must keep an old cock and a young bull.农家想富裕，壮牛老公鸡。
If the ox falls, whet your knife：牛一倒，快磨刀；人遭难，众人踩。
Why buy the cow when the milk is free. 何必为了一棵树而放弃整片森林
A lamb is as dear to a poor man as an ox to the rich. 穷人眼中的一只羊，贵似富人一头牛。
