U.N. member countries的用法和樣例：
例句
- Since all the countries are members of UN,there should be no reason why Switzerland should not join UN.
由於所有的國家都是聯合國成員國，瑞士沒有理由不加入。 - United Nations member states met informally on Thursday to begin talks on key issues of reforming the body's powerful Security Council.
聯合國成員國星期四舉行非正式會議，開始討論有關聯合國安全理事會改革的一些要害問題。
