intransitive. To prove or appear to be of a given degree of purity on testing with a touchstone; to undergo or pass such testing. Also figurative. Obs…
| 单词 | θ216300 | 
| 释义 | society > occupation and work > materials > derived or manufactured material > metal > qualities of metals > 			[verb (intransitive)]		 > undergo test (1)		 toucha1625 intransitive. To prove or appear to be of a given degree of purity on testing with a touchstone; to undergo or pass such testing. Also figurative. Obs…  | 
	
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