单词	kerogen
释义	kerogen noun ker·​o·​gen ˈker-ə-jən  ˈke-rə- : bituminous material occurring in shale and yielding oil when heated Example Sentences Recent Examples on the Web Earth's kerogen was formed when geologic forces compressed the ancient remains of algae and similar critters. Paul Voosen, Science | AAAS, 7 June 2018 Such a macromolecule might potentially look something like kerogen, Eigenbrode said — a substance that’s found in coal and black shale and meteorites. Amina Khan, latimes.com, 8 June 2018 The molecules could have come from something like kerogen, a component of fossil fuel that is found in coal and oil shale. Kenneth Chang, New York Times, 7 June 2018 Word History Etymology Greek kēros wax + English -gen — more at cerumen First Known Use 1906, in the meaning defined above
随便看	orguinette orgulous orgy orhamwood Orhon ori ori- oria oribatid Oribatidae oribatids Oribatoidea oribi oribis orichalc orichalch orichalcum oriel window oriels oriency orient orient blue orient oneself orient pink Orient Point

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