| 单词 | marl bed |
| 释义 | > as lemmasmarl bed marl bed n. ΚΠ 1811 J. Pinkerton Petralogy I. 497 Some of the marl beds contain cardites. 1871 J. M. Hawks Florida Gazetteer 44 He will have to..apply to any of the numerous marl-beds..to fertilize his land. 1986 T. Stevenson Champagne ii. 60 Bar-sur-Aube: A cohesion of marl beds, calcareous marl..and much harder Portlandian calcareous rocks. < as lemmas |
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