这位名为李丽燕的官员称，作为全球温室气体排放量最大的国家，中国想要致力于减少某些行业的气体排放，但是目前为止还没有制定出具体实施计划。
The official, Li Liyan, also said that China, the world's top greenhouse-gas emitter, wanted to commit to emissions reductions in some industries but had not yet worked out how to do so.
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