I have paid the milkman this month.

我这款给送奶人了。

Have you paid the milkman this month?

你这款给送牛奶的人了吗?

The milkman selected the spotted cows,from among a herd of two hundred.

牛奶商从一群200头牛中选出有斑点的牛。

She could tell the approach of the milkman by the whistled notes that somehow always flatted.

她能从那总是偏低的口哨声听出送奶人的到来。