Example sentences from the Web for underclay

It rests on the underclay b b', filled with roots of trees in situ, and it supports a growing forest (C D).
A Manual of Elementary Geology|Charles Lyell.
These roots were Stigmaria, and the stuff into which they penetrated was an underclay.
Scientific American Supplement, No. 447, July 26, 1884|Various
I wish Ehrenberg would undertake a microscopical hunt for infusoria in the underclay and shales; it might reveal something.
More Letters of Charles Darwin Volume II|Charles Darwin

underclay

/ (ˈʌndəˌkleɪ) /

noun

a grey or whitish clay rock containing fossilized plant roots and occurring beneath coal seams. When used as a refractory, it is known as fireclay

Words nearby underclay

undercast, undercellar, undercharge, underclass, underclassman, underclay, underclothes, undercoat, undercoating, undercompensate, under consideration

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

单词	underclay
释义	Example sentences from the Web for underclay It rests on the underclay b b', filled with roots of trees in situ, and it supports a growing forest (C D). A Manual of Elementary Geology\|Charles Lyell. These roots were Stigmaria, and the stuff into which they penetrated was an underclay. Scientific American Supplement, No. 447, July 26, 1884\|Various I wish Ehrenberg would undertake a microscopical hunt for infusoria in the underclay and shales; it might reveal something. More Letters of Charles Darwin Volume II\|Charles Darwin underclay / (ˈʌndəˌkleɪ) / noun a grey or whitish clay rock containing fossilized plant roots and occurring beneath coal seams. When used as a refractory, it is known as fireclay Words nearby underclay undercast, undercellar, undercharge, underclass, underclassman, underclay, underclothes, undercoat, undercoating, undercompensate, under consideration Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
随便看	bring to one's knees bring to pass bring to terms bring up bring up the rear bring up to date brinjal brink brinkley brinkman brinkmanship brinnin brinny brinton briny brio brioche briolette briony briquet briquet's syndrome briquette bris brisance brisbane