叮叮猫儿要飞
research 调查,研究,这是一个不可数名词,所以不能有复数形式 大量的研究 用 a lot of research,lots of research ,plenty of research 大量的研究表明 a lot of research indicates that
saiber赛八
Research shows, successful learners of languages have similarities in many various areas.
vivianygefes
Research shows, successful languages learners have common grounds in many ways.楼上的many various存在重复， similarities翻译不够准确。
木本色计
Research shows that most successful language learners are in common in many aspects.
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