公牛

例句：

1. 1. The farmer was busy milking the cows in the field.
   农民正在田野里挤牛奶。
2. 2. The bullfight is a traditional Spanish event.
   斗牛是西班牙的传统活动。
3. 3. The bulldog is a loyal and protective breed of dog.
   斗牛犬是一种忠诚且保护性强的狗品种。