electric milker

例句：

1. 1. The electric milker is an essential tool for dairy farmers.
   电动挤奶机是奶农们必不可少的工具。
2. 2. The electric milker has greatly improved the efficiency of milk production.
   电动挤奶机大大提高了牛奶生产的效率。
3. 3.The electric milker can be used to extract milk from cows and goats.
   电动挤奶机可以用来从牛和羊身上提取牛奶。