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单词	gyttja
释义	gyttja /ˈjɪtʃə / noun [mass noun] Geology Sediment rich in organic matter deposited at the bottom of a eutrophic lake.The organic-rich bottom deposits (sapropels or gyttja) are rich in oil-producing organic compounds.... Incorporation of old carbon into basal gyttja yields ages from bulk samples that are initially about 600 yr too old. All laboratory tests were performed on 19 samples of gyttja and lacustrine chalk taken from the lakelands. Origin Late 19th century: Swedish, literally 'mud, ooze'.
随便看	outpatient out-pension outpensioner outperform outperformance outperformer outpitch out-place outplace outplacement outplacer out-plan outplant outplay out-plot outpocketing outpoint outpoise outpoll outport outporter out-position outpost outpost camp outposted

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。