Deciding to do some back-yard landscaping, my father-in-law went to the brickyard to

buy quantity of brick. When he asked the salesclerk about the cost, the man replied.

"The more you buy, the cheaper they are."

　　"'is that so?" said my father-in-law." Then just keep loading them on my truck until they're free.

直到免费为止

　　我岳父打算买些砖来修整一下后院。他到砖厂拉砖，当问到砖价时，售货员回答说：“买得越多，价格越低。”

　　“真的吗？”我岳父说，“那么往我的卡车上猛装吧，一直装到免费为止。”