“联合反恐演习”怎么翻译？ 

原文：上海合作组织高度重视安全合作，建立了打击“三股势力”、毒品及跨国有组织犯罪的合作机制，定期举行联合反恐演习，积极推进有关热点问题解决，有效维护了地区安全和稳定。

官方译文：The SCO finds security cooperation extremely important and has put in place cooperation mechanisms on combating terrorism, separatism, extremism, drugs and transnational crimes. The member states have held joint counter-terrorism drills on a regular basis, and worked actively to address hotspot issues. Allthese efforts have helped to maintain regional security and stability.

自学笔记：

高度重视...：find ... extremely important/ attach great importance to/ pay high attention to

联合反恐演习：joint counter-terrorism drill 

“三股势力”指的是宗教极端势力、民族分裂势力和暴力恐怖势力，为避免歧义，此处具体翻译为terrorism, separatism and extremism

定期：on a regular basis = regularly

address V 演说；演讲  (formal) 设法解决；处理；对付. 

Your essay does not address the real issues.
你的论文没有论证实质问题。