That is because the victims are vulnerable to exploitation, laws against this practice are not vigorously enforced and it is a hugely profitable trade.

VOA: standard.2009.08.21

It's also interesting that given the same level of nutritional problems -too much fat, too little fiber, too many calories, whatever it happens to be -not everybody is affected the same way, and some population groups are especially vulnerable, so we'll talk more about that later as well.

另一点值得关注的是,相同的不良营养水平下,太多脂肪,太少纤维,太高热量,无论是哪一种情况,人们受影响的程度不尽相同,有一些人群特别容易受到伤害,我们待会也会讲到这点

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Ademar Barilli says that women traveling alone are especially vulnerable, and that the safe house pays special attention to such cases, although they are not unusual.

VOA: standard.2009.09.01

Health officials did not know how deadly the virus would be, who would be most vulnerable, how quickly it would spread and whether it could be contained.

VOA: standard.2010.04.29

"I am very confident that that would leave us in the position where the government is taking risks it does not understand, cannot manage effectively, highly vulnerable to overpaying for those assets, and charges that we are giving a disguised subsidy that is unjustified,".

VOA: standard.2009.03.24

"We have to protect the social gains that we have made in this hemisphere over the past decade,and ensure that the economic recovery of all the countries in the hemisphere does not come at the expense of the poorest and most vulnerable members of our society,".

VOA: standard.2009.04.15