And technological improvements have made the huge reserves of gas in America, from shale beds and the like, a commercial prospect.
技术的改进使得在美洲页岩层以及类似地方的巨大天然气储量成为一个商业希望。
2
Compared with the technological investments needed to reduce greenhouse gas emissions globally, the cost of meeting the current demand for family planning is cheap.
与那些为了在全球范围内减少温室气体排放而花费在技术研发上的费用相比，维持现有的生育计划更为省钱。
3
China has a technological lead in turning coal into gas. It has been using the technology widely to make petrochemicals and fertilizers as a substitute for pricier natural gas.