The staff who are killed are not simply victims of the risk inherent in many field operations: they are usually targeted deliberately precisely because they are there to protect and help vulnerable people.
遇害工作人员不只是许多外勤业务固有危险的受害者：而且就因为他们在那里保护和帮助易受伤害的人而常常成了蓄意袭击的目标。