develop的名詞怎么寫

　　They had laid the groundwork for future development.

　　他們為此后的發展奠定了基礎。

　　The central plank of the bill was rural development.

　　這一法案的核心是農村發展。

　　Scores of U.S. companies farm out software development.

　　許多美國公司外包軟件開發。