Mike's grandfather is a famous scientist.He does r work in many fields填什么
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Mike''sgrandfatherisafamousscientist.Hedoesrworkinmanyfields填什么Mike''sgrandfatherisafamousscientist.He
Mike's grandfather is a famous scientist.He does r work in many fields填什么
Mike's grandfather is a famous scientist.He does r work in many fields
填什么
Mike's grandfather is a famous scientist.He does r work in many fields填什么
填 research
研究.
do research work 从事研究工作.