He says it also shows where to send much-needed medicines, insecticide products and protective mosquito nets.

VOA: special.2010.04.20

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

In nineteen-thirty-three, he developed protective clothing that made it possible for him to fly very high.

VOA: special.2011.04.06

But the shutters stayed closed until after astronauts removed the windows' protective covers during a nearly six-hour spacewalk Wednesday.

VOA: standard.2010.02.18

But the sight of workers wearing white protective suits and gloves hauling in tons of oil-contaminated waste - including bags of sandy tar balls, vegetation,used oil booms, rags and other clean-up supplies - has caused alarm among some Gulf coast communities.

VOA: standard.2010.08.05