provisional sums

例句：

1. 1. The project is provisional until we receive more funding.
   这个项目在获得更多资金之前是临时的。
2. 2. The provisional president will be in charge of the meeting.
   临时主席将负责主持会议。
3. 3. The provisional agreement was reached after much discussion.
   经过大量讨论后达成了临时协议。