transitive. Geology. To form into a trough or into the shape of a trough.
| 单词 | θ5145 | 
| 释义 | the world > the earth > structure of the earth > formation of features > tectonization or diastrophism > tectonize			[verb (transitive)]		 > subsidence or troughing (2)		 trough1839 transitive. Geology. To form into a trough or into the shape of a trough. overdeepen1905 transitive. More generally: to deepen excessively or abnormally; esp. to further deepen by erosion.  | 
	
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