Examples
wǒ men我们guó jiā国家bì xū必须kāi fā开发zì rán自然zī yuán资源。
我们国家必须开发自然资源。
Our country must develop its natural resources.
为了长期利益，我们决定把开发部门卖掉。
For the sake of long-term interests, we have decided to sell the development department.
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。
Since all tasks have been completed without delay, we are ready to start the next phase of development.