最关键的问题是安理会的组成，哪些国家享有否决权，地区代表性。
At issue is the makeup of the Security Council's membership, who gets veto power, regional representation.
大兴安岭的森林生态系统是我国寒温带地区代表性较强的生态系统。
Forest ecosystem in Daxinganlin is representative in cold temperate zone in our country.
将决定安理会成员的数量，投票权和地区代表性的实质性谈判将在三月四日开始。
Substantive negotiations on the issues of membership, veto power and regional representation will start on March 4.
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