extract ion
		
		
					
									英 
																 美
										
													美 
																 
										
							 
		
	 
 
	
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																	名词 extraction:
									
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										the process of obtaining something from a mixture or compound by chemical or physical or mechanical means										
																				 
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										properties attributable to your ancestry										
																				 
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										the action of taking out something (especially using effort or force)										
																				 
 
 
 
 
 
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	海词词典,十七年品牌