Translation of "Phase" in Chinese

The first phase of construction has been completed.

工程的第一階段已經完成了。

Cancer can be cured easily if it is found in its first phase.

癌症如果在第一阶段被发现的话是很容易治愈的。

Since all tasks have been completed without delay, we are ready to start the next phase of development.

既然所有的任务都按时完成了，我们已经准备好开始下一阶段的开发了。