1N-COUNT [usually plural]维和士兵Peacekeepers are soldiers who are members of a peacekeeping force. 维和士兵
There's been much fear that the United Nations peacekeepers would be under attack in a situation like that.
人们非常担心联合国维和士兵在这种局势下会遭到攻击。
2N-COUNT [usually singular]和平维护国;和平维护组织 If you describe a country or an organization as a peacekeeper, you mean that it often uses its influence or armed forces to try to prevent wars or violent conflicts in the world. 和平维护国;和平维护组织
They want the United Nations to play a bigger role as the world's peacekeeper.