天然气和煤炭，还有化石燃料，也出现了类似的价格下跌，而且看起来会持续很长时间。
Natural gas and coal—also fossil fuels—have similarly seen price declines that look to be long-lived.
因为还有类似石油和天然气这种其他的资源可供选择，对吗？
Well, there were other energy choices like oil and natural gas, right?
彼得认为，'还有许多问题需要我们去解答：例如，世界上有多少天然气或生物甲烷？
There are a lot of broader questions we need answers to: such as, how much natural gas or biomethane is there in the world?
应用推荐