农史文献数量庞大、类型多样，是农史研究的重要基础。

Agricultural history documents are the important base of researching in this domain, with great quantities and varieties.

youdao

农史文献数量庞大、类型多样，是农史研究的重要基础。

Agricultural history documents are the important base of researching in this domain, with great quantities and varieties.

youdao