last two months of gestation for cows

例句：

1. 1.The farmer has been waiting for the cow to give birth for the last two months.
   农民已经等待了牛分娩的最后两个月。
2. 2.During this time, the cow is in its last two months of gestation.
   在这期间，牛正处于其妊娠期的最后两个月。
3. 3.The farmer has been waiting for the cow to give birth for the last two months.
   农民已经等待了牛分娩的最后两个月。