"First off,there is the infectious disease risk because if you use human blood there's a lot of transmissible diseases.

VOA: special.2009.08.03

He presents himself, in other words, as a human being of unparalleled piety and devotion who will risk life itself rather than quit the post that has been given to him.

他呈现的自我，换句话说，是极度虔诚敬神的人类,甚至压下自己的生命作赌注,也不愿放弃这个天赐的角色。

耶鲁公开课 - 政治哲学导论课程节选

Machiavelli's preference for these extreme situations expresses his belief that only in moments of great crisis, where the very existence of a state is at risk, does human nature truly reveal itself.

马奇亚维利偏好,这类极端的情势,表述出他相信,仅在重大危机的当头，当一国的存亡面临考验之时，人类的本性才会真正显现出来。

耶鲁公开课 - 政治哲学导论课程节选

Now,a new study shows that it can also reduce a man's risk of getting human papillomavirus, or HPV.

VOA: special.2009.04.01

(Deborah Sigmund, founder of the advocacy group, Innocents at Risk,) says most of the victims of human trafficking come from economically depressed countries and are lured to the U.S.

VOA: standard.2010.05.24