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

There's almost always some weight loss book on the best-seller list, and the question is, which of these approaches to dieting works the best?

教人减肥的书总高悬在畅销书排行榜上,问题在于,哪种减肥方法是最有效的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

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