| 单词 | crux | 
| 释义 | crux    (krŭks, krks)n. pl.   crux·es or  cru·ces (krsēz)  1.  The basic, central, or critical point or feature: the crux of the matter; the crux of an argument. 2.  A puzzling or apparently insoluble problem. 3.  The most difficult portion of an ascent in rock climbing or mountaineering. [Probably short for Medieval Latin crux (interpretum), torment (of interpreters), from Latin crux, cross.]  | 
	
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