minimal normal subgroup

例句：

1. 1.The minimal requirements for the project were met.
   项目所需的最小要求已经满足。
2. 2. Minimal resources are available for this task.
   这项任务所需的资源非常有限。
3. 3. The minimal amount of time was spent on research.
   在研究上花费的时间是最少的。