milch cow的用法和樣例：
例句
- One cow furnished milk for all of them.
一頭奶牛為他們所有人提供牛奶。 - John has to milk the cow early in the morning.
約翰一大早就要給奶牛擠奶。 - I refuse to be a milch cow for your family any longer.
我不再做你家的搖錢樹了。 - This product has always been a cash cow for our company.
這種產品一直是我們公司的搖錢樹。
