1 [U] the process of becoming bigger, stronger, better etc, or of making sb/sth do this 发育；发展；培育；开发: the development of tourism in Cuba 古巴旅游业的发展a child's intellectual development 儿童的智力发展

2 [U] [C] the process of creating sth more advanced; a more advanced product 研制更先进的产品；更先进的产品: She works in research and development for a drug company. 她在一家医药公司从事研究和开发工作。the latest developments in space technology 航天技术的最新成果

3 [C] a new event that changes a situation 新情况；事态发展: This week has seen a number of new developments in the Middle East. 这星期中东形势有几个新发展。

4 [C,U] a piece of land with new buildings on it; the process of building on a piece of land 新开发区；开发（土地）: a new housing development 新建住宅区: The land has been bought for development. 这块土地已经买下来进行开发。