挤牛奶 用英语怎么说

"挤牛奶"用英语可以表达为"milk a cow"。
"Milk a cow"是一个习惯用语，意思是从奶牛身上挤出牛奶。这个习惯用语源于农业的实践，人们会用手或者机器来从奶牛身上挤出牛奶。
下面是一些使用"milk a cow"的例句：
I used to milk cows on my grandfather's farm when I was a child. (我小时候在我爷爷的农场上帮忙挤牛奶。)
The farmer milks the cow twice a day to get enough milk for his family. (农夫每天挤两次牛奶，以便为他的家庭提供足够的牛奶。)
Milking cows is hard work, but it's an important part of running a dairy farm. (挤牛奶是辛苦的工作，但是这是经营乳制品农场的重要组成部分。)