1.The challenge then is to show our young people, who are vulnerable to appeals from terrorists,
vulnerable to 易受…的攻击;易受…的侵害
Migrant workers are vulnerable to exploitation.
流动工人易受剥削 。
But modern humans were more vulnerable to the cold.
但是现代人更容易受到寒冷的攻击 。
2.because people now meet many others who differ from themselves.
differ from 与…不同;区别于…;与…持不同意见,有分歧:
That arrangement differs from the one I had in mind.
那种安排同我原先所想的不同 。
On one point I differ from you.
我在这一点上跟你有分歧 。