| 单词 | rough file | 
| 释义 | > as lemmasrough file   rough file  n. a file with a deeply cut face; a coarse file.Cf. bastard adj. 4d. ΚΠ 1616    P. B. in  R. Anton Philosophers Satyrs sig. B2v  				Rough files and corsiue waters, onely may..fetch this rust away. 1738    G. Smith tr.  Laboratory  i. 16  				Take a Piece of fine Silver, form it into a flat Square, and with a rough File, rough it all over one Side. 1821    Sat. Evening Post 		(Philadelphia)	 18 Aug. 2/2  				Half round, ruff and bastard files. 1845    Encycl. Metrop. VIII. 275/2  				Files of the very coarsest sort are called rubbers, and the next in order to these are called rough files. 1997    Herald 		(Glasgow)	 		(Nexis)	 13 Dec. 16  				Take the rough file (bastard type), then use long smooth strokes,..working from tip to tail. < as lemmas | 
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