became a national best-seller. One hundred fifty years after "On the Origin of Species" first appeared, it remains one of the most influential and debated books ever written.

VOA: special.2009.12.01

Unfortunately, weight loss diets don't work very well, and that's one of the reasons why there is always a diet book on the best-seller list.

很不幸,食品减肥的作用不明显,正因为如此,最畅销书榜才总有减肥食品的书上榜

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选