| 单词 | thalweg | 
| 释义 | thal·weg    (tälvĕg′)n.  Geology 1.  The line defining the lowest points along the length of a river bed or valley. 2.  A subterranean stream. [German Talweg, Thalweg : Tal, Thal, valley (from Middle High German tal, from Old High German) + Weg, way (from Middle High German wec, weg, from Old High German weg; see  wegh- in the Appendix of Indo-European roots).]  | 
	
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