stage of pneumocardial decpmpensation

例句：

1. 1. The research has identifiedseveral stages of development.
   这项研究已经确定了几个发展阶段。
2. 2. The project is divided into severalstages.
   该项目分为几个阶段。
3. 3. Thecompany is in the midstof a major restructuringstage.
   该公司正处于重大重组阶段。