大母猪

例句：

1. 1. The farmer had to feed his large sow every day.
   农民每天必须喂养他的大母猪。
2. 2. The big sow was very pregnant.
   那头大母猪非常怀孕。
3. 3. The farmer's wife was worried about the big sow's health.
   农民的妻子担心那头大母猪的健康。