I hope you haven't used all the milk.

　　希望你沒有把牛奶都用掉了。

　　A skin had formed on the top of the milk.

　　奶上結了一層奶皮。

　　Would you like milk or cream in your coffee?

　　你的咖啡里要牛奶還是奶油？

　　We took the milk run back home.

　　我們回家途中多次停留。

　　If you have any spare milk, could you give me a little?

　　你要是有多余的牛奶，給我一些好嗎？