不是只有页岩气是一种新的储备能源：在砂岩中的“致密地层天然气”还有在煤层里的甲烷(一种能在矿井里杀死金丝鸟的气体)也十分有前景。
Nor is shale gas the only new sort of reserve: "tight gas" in sandstones and coal-bed methane (the sort of gas that used to kill canaries down mines) are also promising.
作为一项规则，这些企业所在行业都被认定为“战略行业”。战略行业几乎涵盖任何能源相关领域，不管是风能、太阳能还是储备能源；医疗设备、药物和科技领域也在此列。
As a rule, they are in industries designated as "strategic" -notably anything to do with energy, be it wind, solar or stored-and can also be found in medical equipment, drugs and technology.
由此可知，节约使用能源储备可以延长寿命。
It follows from the above that sparing use of energy reserves should tend to extend life.
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