| 单词 | cement-stone | 
| 释义 | > as lemmascement-stone   cement-stone  n. a nodule of argillaceous limestone occurring embedded in clay, from which cement is made. ΘΚΠ the world > the earth > structure of the earth > constituent materials > stone > a stone > 			[noun]		 > concretionary or nodular > septarium septarium1748 turtle-stone1851 beetle-stone1859 cement-stone1863 1863    A. C. Ramsay Physical Geol. & Geogr. Great Brit. 		(1878)	 xxxv. 611  				Cement stones are also found..in the Eocene strata. 1875    R. Hunt  & F. W. Rudler Ure's Dict. Arts 		(ed. 7)	 II. 824  				The Blue Lias cement-stones are considered the strongest water-limes of this country. < as lemmas | 
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