英语翻译Mozambique is a country that tries to take health seriou

英语翻译
Mozambique is a country that tries to take health seriously.Its prime minister,Pascoal Mocumbi,is a doctor.It's been one too,but Frelimo,the former liberation movement that now governs the country,could not afford to keep both him and Dr.Mocumbi at medical school.
困惑之处是It's been one too这一句,movement是F的同位语吗?如果是,那么最后一句的him又是谁,

根据网上的资料,楼主这段文字并不完整.一位来自贵州的人在网上贴出该段有缺漏的文字,并指是从翻译参考书上复制的.然後又贴出据说是来自 Economist 的完整文字,如下：
MOZAMBIQUE is a country that tries to take health seriously.Its prime minister,Pascoal Mocumbi,is a doctor.Its president,Joaquim Chissano,might have been one too,but Frelimo,the former liberation movement that now governs the country,could not afford to keep both him and Dr Mocumbi at medical school.
建议译文如下：
莫桑比克这个国家正开始重视国民的健康问题.该国的总理 Pascoal Mocum 是个医生,而总统 Joaquim Chissano 本来也有机会成为医生.不过,由於 Frelimo（其前身为该国的解放运动,现在已成为执政党）的事务,令两人都难有馀暇於医学院进修.