他既是优秀编辑，又是宋史研究的学者。

He is not only an excellent editor, but also a scholar of Song Dynasty.

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陈乐素教授便是最早从事宋史研究的老一辈学者之一。

Prof. Chen Lesu is one of the earliest scholars who started the study.

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陈乐素教授便是最早从事宋史研究的老一辈学者之一。

Prof. Chen Lesu is one of the earliest scholars who started the study.

youdao