The aim should be to aggressively create what he calls a "protective barrier" against loneliness.

VOA: special.2010.01.06

So you hear about the Omega-3 fatty acids coming from seafood and these tend to be protective against diseases.

你们应该听过海鲜中提取的ω-3脂肪,这种脂肪能抵御多种疾病

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So you could have--be consuming fat that is in itself good for heart health let's say, or maybe protective against cancer in some ways, but it's also adding calories to the diet, so you want to have the optimal amount of fat and not over-consume it because of the calories.

所以你可能是在食用,有益于你心脏健康的脂肪,打个比方,又或是在某种程度上可以抗癌,但它也给你的饮食增加了热量,因此为了减少热量应该食用适量,而非过量的脂肪

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The fibers form a protective barrier against gunfire.

VOA: special.2011.03.01

So we are thinking perhaps those compounds are playing some sort of protective role against several cancers."

VOA: standard.2010.06.30

"We continue to look for ways to engage with Russia on missile defense in a way that is mutually beneficial and protective of countries' security against these new threats we face in the world."

VOA: standard.2010.03.26