慢速英语:US Could Become an Energy Exporting Country

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net – adj. what remains after subtracting imports, the balance of

hydraulic fracturing (fracking) – n. forcefully injecting material into the earth to release oil and gas deposits

deposit – n. an amount of a mineral resource existing underground

resilience – n. the ability to recover from a setback, difficulty or problem

shale oil – n. oil recovered by processing shale rock that contains oil