挤牛奶用英语来说是“milk the cow”。
例句：
1. 不过，现在他必须亲自挤牛奶，还得出去托钵一些草给牛吃。
But now he had to milk the cow and all that.
2.“好吧，”她答应道，“如果你照看这些蛋糕，我就给你吃顿晚饭。我要出去挤牛奶，我不在的时候，你一定要留神，别把这些蛋糕烤糊了。”
"Yes," she said," I will give you some supper if you willwatch these cakes. I want to go out and milk the cow; and youmust see that they do not burn while I am gone."
3.爸爸出去挤牛奶。
Dad went out to milk the cows.
《柯林斯高阶英汉双解学习词典》
4.农场工人用手挤牛奶。
Farm-workers milked cows by hand.
《柯林斯高阶英汉双解学习词典》
5.要是他没有穿那件挤牛奶的围裙，没有人能够猜出他是谁。
Without the milking-gear nobody could have guessed what he was.
同时也可以使用milk cows。
例：But isn ' t the main thing that she should be able to milk cows , churn good butter , value animals and direct farm workers ?
但是难道这点不重要吗？就是她要会挤牛奶，搅制出上等的黄油，珍惜动物，并指导农场工人？