in-calf

例句：

1. 1.The farmer milked the cow in-calf to get a fresh supply of milk.
   农民给小牛挤奶以获得新鲜的牛奶供应。
2. 2. The calf was born prematurely and needs extra care.
   这头小牛早产，需要额外的照顾。
3. 3.The farmer decided to sell the cow for meat and the calf for breeding.
   农民决定卖掉奶牛和公牛以获取肉类和繁殖后代。