| 单词 | rib-and-furrow | 
| 释义 | rib-and-furrow [`rib ǝn `fǝr·ō]  GEOLOGY The bedding-plane expression for micro-cross- bedding, consisting of sets of small, transverse arcuate markings confined to long, narrow, parallel grooves oriented parallel to the current flow and separated by narrow ridges.  | 
	
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