research for ...scientists have long been doing research_______he brain to help people make better use of it.这里的答案是 on我记得好像有个research for 有没有这个词?

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researchfor...scientistshavelongbeendoingresearch_______hebraintohelppeoplemakebetteruseofit.这里的答案是o

research for ...scientists have long been doing research_______he brain to help people make better use of it.这里的答案是 on我记得好像有个research for 有没有这个词?
research for ...
scientists have long been doing research_______he brain to help people make better use of it.
这里的答案是 on
我记得好像有个research for 有没有这个词?

research for ...scientists have long been doing research_______he brain to help people make better use of it.这里的答案是 on我记得好像有个research for 有没有这个词?
research on 某方面调查,for 好像没有,你记的好像是search for,寻找

research on 做有关…的研究