如果潮汐能、风能和波浪能都得到发展，英国就可以关闭天然气、煤炭和核能发电厂，并向欧洲其他地区出口可再生能源。
If tide, wind and wave power are all developed, Britain would be able to close gas, coal and nuclear power plants and export renewable power to other parts of Europe.
而且，西宾夕法尼亚州的初期的天然气工业也应该正在发展壮大了。
What's more, Western Pennsylvania's nascent natural gas industry should provide growth for years to come.
在过去的几年，作为新项目的天然气价格已经下跌，特别是在页岩开始有发展趋势之时，正好赶上了全球经济萧条，以至于天然气需求减少。
Gas prices have tumbled in the past couple of years as new projects, especially shale, came on stream just as the global recession lessened demand.
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