（强硬的人）”并不是某种你想吃的东西，它的意思是指某个难以应付的人，他（她）会为了得到所想的东西而不折手段。
A tough cookie is not something you want to eat. It is a person who is difficult to deal with, and would do anything necessary to get what he or she wants.
不幸的是，对于那些没有稳定的感情和一定的朋友圈的人，“要”治疗“低社会支持率不是一件简单的事”，伯格说，“有些人觉得社交活动有点难以应付，而且这件事并不仅仅像我们所看到的那样，所以去交朋友吧！”
Unfortunately, for people who are not in a committed relationship and do not have a network of friends, "it's not that easy to 'treat' low social support," Burg says.
靠固定退休金生活的人最难以应付的是不断上涨的物价。
People who retire on fixed incomes have the greatest difficulty with rising prices.
让其他方面都健康的人们进行预防，使心脏病学家们和从事一线治疗的医生们都感到难以应付。
Trying to manage prevention in otherwise healthy people would overwhelm both cardiologists and primary care physicians.
让其他方面都健康的人们进行预防，使心脏病学家们和从事一线治疗的医生们都感到难以应付。
Trying to manage prevention in otherwise healthy people would overwhelm both cardiologists and primary care physicians.
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