The Sierra Club had stressed, not the possibility that some proposal on this region was under contemplation, but rather the inter-related environmental impacts of individual mining operations in this region.

• 赛拉俱乐部强调说，需要思考的不是涉及该地区的提案是否有可能存在，而是与在该地区某一单个采矿作业有内在联系的环境影响。