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to force liquid at high pressure into rocks, deep holes in the ground, etc. in order to force open existing cracks (= narrow openings) and take out oil or gas - frack (for something)
They have been fracking for oil in South Dakota since the fifties. 五十年代以来，他们一直在南达科他州开采石油。 - frack something
Thousands of wells have been drilled and fracked in recent years. 近年来，成千上万口井被钻探和压裂。 - frack something for something
Some of the land is now being fracked for oil. 一些土地现在正压裂石油。
- frack (for something)