development發(fā)展可數(shù)嗎

　　The central plank of the bill was rural development.

　　這一法案的核心是農(nóng)村發(fā)展。

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

　　許多美國公司外包軟件開發(fā)。

　　He ran a property development business in the eighties.

　　他在80年代經(jīng)營一家房地產(chǎn)開發(fā)公司。