Sick animals eat less feed, but it appears they also have different nutrient requirements.

序言：生病的动物吃很少的食物，但是很明显，他们也有不同的营养需求。

youdao

The World Health Organization says less than 40 percent of mothers around the world breast-feed their infants in the first six months.

VOA: standard.2009.08.01

Previously, the news feed occupied less than 40% of the real estate on the Facebook home page, according to Julie Zhuo, Facebook's director of design.

CNN: Facebook revamps site, tweaks mobile apps

History has already shown that Facebook users don't take kindly to having more than one feed to look at, even if that feed is technically making their lives easier and removing some of the less important updates from the main feed.

BBC: Facebook: Web reaction to the News Feed revamp

One of the more-or-less unrealistic assumptions that traders feed into those models is that markets are liquid.

ECONOMIST: Technology shares