cow in calf

例句：

1. 1.The cow in calf is a valuable asset to the farm.
   这头小公牛是农场的宝贵资产。
2. 2. The farmer was so proud of his cow in calf that he named it after his son.
   这位农民为他的牛犊感到骄傲，因此给它取名为儿子的名字。
3. 3. The cow in calf was born on the farm and will be sold at the auction.
   这头小公牛出生在农场，将在拍卖会上出售。