And study on Themes in Chinese is not systematic.
而学者们对汉语主位的研究并不系统。
At present, the study on connectives in modern Chinese is comparatively weak or not systematic.
目前，现代汉语研究中，关联词的研究相对薄弱，也缺乏系统性。
At present, the study on connectives in modern Chinese is comparatively weak or not systematic.
目前，现代汉语研究中，关联词的研究相对薄弱，也缺乏系统性。
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