EGS was first proposed by Los Alamos National Laboratories in the 1970s, but the technique was largely forgotten about when oil prices fell.

最初是美国洛斯阿拉莫斯国家实验室(Los Alamos National Laboratory)在上世纪七十年代提出EGS建议，不过，在石油价格下跌时期，大家差不多把这一技术都忘记了。

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The sharp rise in oil prices follows an equally sharp collapse over the previous two years, when prices fell by more than half to their lowest level in real terms since before the 1973 shock.

现在的油价急升紧随前两年的同幅急跌，那时跌幅过半，实值降到自1973年石油危机前算起的最低水平。

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For example, when oil prices fell sharply in the mid-1980s, oil stocks hardly moved.

FORBES: A Shield Against The Next Oil Shock

Perhaps it is too scarred by the memories of the late 1990s, when oil prices fell low, government revenues plummeted, the economy stagnated, unemployed youths became restive and observers wondered whether the monarchy's days were numbered.

ECONOMIST: Oil prices

While oil prices fell from prewar spikes when actual shooting got underway, massive supply cuts never materialized.

FORBES: Magazine Article