一句翻译

加利福尼亚州要求2020年之前将工业温室气体减少25%，该里程碑式的协议很大程度上只是一种象征性的胜利，对气候的影响微乎其微。但是它能促使国家在全球变暖问题上的立场上发生重大变化-并且在未来几年内给本州带来竞争性优势。
我的翻译：
California's landmark deal to require a 25% cut in industrial greenhouse gases by 2020 is only a symbolic victory to a large extent and has little influence on the climate, but it can promote a significant change in nation's stand on global warming and bring competitive edge for our state in coming years.
原文：
California's landmark deal to require a 25 percent cut in industrial greenhouse gases by 2020 is a largely symbolic victory with only a tiny impact on climate. But it's one that could prompt significant change in the nation's stance on global warming - and give the state a competitive edge in future years.
今天好有成就感。