proper phase

例句：

1. 1.The proper phase of the moon is when it's full.
   月亮的适当阶段是满月。
2. 2. During the proper phase of their lives, they were very happy.
   在他们人生的适当阶段，他们非常幸福。
3. 3. The proper phase of the project is now complete.
   项目的适当阶段现在已经完成。