professor Milliken,one of the world's leading experts on the evolution of insects,is scheduled to come to Beijing in July.after he stays here for a few days,i am to accompany him on a tour of Yunnan.为什么one of the world's lesding experts 为啥

professor professor Milliken,one of the world's leading experts on the evolution of insects,is scheduled to come to Beijing in July.after he stays here for a few days,i am to accompany him on a tour of Yunnan.为什么one of the world's lesding experts 为啥 associate professor assistant professor visiting professor 英语单词 professor professor是什么意思 professor是什么意思? institute professor 和sterling professor是什么意思 Professor Smith will come here to give a speech.All the preprations must be______before 5 o'clockA.in time B.in sight C.in place D.in control The Professor音标?RT visiting associate professor是什么意思 associate professor什么意思 distinguished alumni professor是什么意思 professor Waterss是什么意思 professor什么意思? edenfield professor是什么意思 professor什么意思