| 单词 | coal trough | 
| 释义 | > as lemmascoal trough   coal trough  n. 		 (a) a trough used as a container for coal;		 (b) Geology an elongated depression containing coal-bearing strata. ΚΠ 1793    Sporting Mag. Mar. 367/1  				A hare..jumped into the window of a blacksmith's shop at Salehurst and was taken alive in the coal trough. 1814    Philos. Mag. 43 326  				Below this occur what I have denominated the Floor Rocks of the Anglesea Coal-trough. 1971    Jrnl. Geol. 		(Chicago)	 79 308/1  				The recognition and mapping of intermontane coal troughs is a reliable method of reconstructing the tectonic history of an orogenic belt. 2007    West Australian 		(Perth)	 		(Nexis)	 1 Oct. 11  				Boys commonly worked in smithies, filling water and coal troughs, blowing the fires and using the sledgehammer. < as lemmas  | 
	
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