1、发展：
agriculture develpopment
social development
industrial develpopment
development in foreign affairs
2、开发
water-power development
oil-field development
development of natural resouerces
interllectual development
3、研制
advanced development远景产品研制，样机试制
under development
engineering development
operatinal development产品改进性研制
exploratory development探索性研制
4、开拓
ore development
lateral development水平开拓
5、展开（用于数学）
series development级数展开
development of function函数的展开
6、显影
chemical development化学显影
over development显影过度
time development定时显影