他在非洲为无国界医生工作了两年。

He worked for ___MSF in Africa for two years.

这个程序需要MSF库才能正常运行。

This program requires ___MSF libraries to run properly.

经理们使用MSF系统从多个渠道收集员工反馈。

Managers use the ___MSF system to collect employee feedback from multiple sources.