R and D
noun [ U ] (also R & D) uk/ˌɑːr ən ˈdiː/ us/ˌɑːr ən ˈdiː/
研究与开发（research and development的缩写）
abbreviation for research and development: the part of a business that tries to find ways to improve existing products, and to develop new ones
If we want to get ahead of our competitors, we ought to invest more in R and D. 如果我们想领先于竞争对手，就应该在研发上增加投入。