The steam, however, is made by burning other fossil fuels-normally natural gas-and because heating rock takes a lot of steam, making that steam takes a lot of money.
然而，蒸汽是需要燃烧其他燃料来产生的——一般来说是天然气——因为加热岩石需要很多的蒸气，那么制造这些蒸汽的成本就会很高。
Even when nuclear power plants go horribly wrong, they do less damage to the planet and its people than coal-burning stations operating normally.
即便是核电厂出现了严重的差错，它们给这个星球及其子民带来的破坏也没有正常运行的煤电厂高。
Heaths normally develop on poor sandy well-drained soils in temperate climates and are usually subclimax communities maintained by grazing burning and sometimes cutting.
正常情况下石楠灌丛生长在温带的贫瘠，含沙的或是排水良好的土壤上，放牧，焚烧和不时地砍伐通常使石楠灌丛亚顶极群落得以维持。
This is because oil well fires are extinguished, or put out, at the wellhead just above ground. Normally, explosives are used to stop the fire from burning.
扑灭油井大火非常困难，这是由于要扑灭的油井大火仅仅在地表面的井口。
Symptoms may include burning or shooting sensations, and abnormal sensitivity to normally non-painful stimuli.
症状可能包括烧灼感、刺痛感、或对非疼痛刺激的异常敏感。
Symptoms may include burning or shooting sensations, and abnormal sensitivity to normally non-painful stimuli.
症状可能包括烧灼感、刺痛感、或对非疼痛刺激的异常敏感。
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