diversification
	英 [daɪ,vɜːsɪfɪ'keɪʃən]
美[dɪ,vɝsɪfɪ'keʃən]
	    
    考试真题
	
	- Our species originated around 200,000 years ago and underwent tremendous diversification culturally, technologically, linguistically, artistically for 130,000 years.
 2019年6月六级真题(第一套)听力 Section C