12. Encourages the Secretary-General, through the United Nations System Chief Executives Board for Coordination and the United Nations Development Group, as appropriate, to make efforts to enhance the coherence, effectiveness and efficiency of the United Nations development system;
12. 鼓励秘书长酌情通过联合国系统行政首长协调理事会和联合国发展集团，努力加强联合国系统发展系统的一致性、效力和效率；