n.d.

例句：

1. 1. The project isstill in the development stage.
   这个项目仍处于发展阶段。
2. 2. Thedata is not yet ready for release.
   数据尚未准备好发布。
3. 3. The meeting has been postponeduntil next month.
   会议已被推迟到下个月举行。