provisional pattern of amino acids

例句：

1. 1. The project is still in a provisional stage.
   该项目仍处于临时阶段。
2. 2. We need to make some provisional arrangements for the meeting.
   我们需要为会议做一些临时安排。
3. 3. The provisional agreement between the two countries has been signed.
   两国之间的临时协议已经签署。