| 单词 | quadruple | 
| 释义 | Word Frequency quadruple(ˈkwɒdrʊpəl, kwɒˈdruːpəl) verb 1.  to multiply by four or increase fourfold  adjective 2.  four times as much or as many; fourfold 3.  consisting of four parts noun 4.  a quantity or number four times as great as another Derived forms quadruply (ˈquadruply) adverb Word origin C16: via Old French from Latin quadruplus, from quadru- (see quadri-) + -plus -fold | 
	
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