在建设古籍书目数据库之前，必须做好前期的准备工作。
The article points out that before building the bibliographic database of ancient books, some preparatory work is needed.
总之，在谈判场上，谈判前期的准备工作是不可替代的。
In a word, there is no substitution for advance preparation in negotiation arena.
无论是在前期的准备工作还是会议的议程中，代表们的出色表现给与会人员留下了深刻的印象。
The outstanding presentation of delegates both in the preparing period and the whole process of conference gave a deep impression to others.
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