Perhaps it may be a tiny bit more expensive but in a short time you will pay back the slightly higher cost of a white roof from savings in air conditioning. But many people [who are opposed] will say that anything you want them to do will be more expensive, simply because they are not used to thinking about it that way.
「這麼簡單的事，根本不必花費什麼錢，但就是很難推行。到現在加州建築師還堅決反對『淡色屋頂』這種規範，哪怕一般人根本看不到這些屋頂！