"For large animals like beef, a very large fraction of the nitrogen that enters the cow's mouth is excreted out the back end."

VOA: special.2011.04.05

Give enough of the vaccine so you have a dose for everybody in the world, or a large fraction of the people.

疫苗的数量,足以让世界上每个人都接种一支,或者让绝大多数人都能接种一支

耶鲁公开课 - 生物医学工程探索课程节选

OK, so tiny fraction, tiny fraction of alphas, tiny fraction of incident alphas, tiny fraction of incident alphas deflected through large angles.

这一小部分，极少的阿尔法粒子，极小部分的入射阿尔法粒子，小部分的入射阿尔法粒子,以大角度偏转。

麻省理工公开课 - 固态化学导论课程节选

The idea really took root--the idea, the intuitive idea is that as you write a large number of policies, the fraction that will result in accidents becomes closer and closer to the probability of one accident.

这种观点建立在...,观点是,只要你签的保单足够多,事故占保单总数的比例就会越来越接近,事故发生的概率

耶鲁公开课 - 金融市场课程节选

A tiny fraction of the incident alpha particles were deflected through large angles.

极小部分的入射的阿尔法粒子,发生大角度的偏转。

麻省理工公开课 - 固态化学导论课程节选