IOM notes security in many parts of the country is improving and new displacements are decreasing.But it says millions of internally displaced people are still unable or unwilling to return home.是什么意思_IOM notes security in many parts of the country is improving and new displacements are decreasing.But it says millions of internally displaced people are still unable or unwilling to return home.在线翻译_英语_读音_用法_例句