| 单词 | jumar | 
| 释义 | Word Frequency jumar(ˈdʒuːmə) noun mountaineering 1.  Also called: jumar clamp a clamp with a handle that can move freely up a rope on which it is clipped but locks when downward pressure is applied verb (intransitive) 2.  to climb up a fixed rope using jumars Word origin C20: Swiss name | 
	
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