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1·Walsh said the European Union should use its emissions trading scheme as a fore-runner for a global programme but not attempt to drag in non-EU airlines lest they take legal action.

沃尔什还表示欧盟应该作为全球计划的先驱，实行它的排放权交易计划，但不要尝试将非欧航空公司也拉这项计划，以免他们提出诉讼。