至于书面材料，我认为他需要携带一些有用的数据去参加会议。

As to paperwork, I think he needed to take some useful data with him to the conference.

youdao

至于书面材料，我认为他需要携带一些有用的数据去参加会议。

As to paperwork, I think he needed to take some useful data with him to the conference.

youdao