燃料价格上涨将如何影响世界？

reserves –n. a supply of something that is stored so that it can be used at a later time

fossil fuels –n.(pl.) fuels (coal, oil, natural gas) which are formed in the Earth from dead plant and animal matter

insurance –n. protection from bad things that may happen in the future

certification -–n. official approval to do something legally

generator –n. a machine that produces electricity

elevator –n. a machine used for carrying people and things to different levels in a building

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