剑桥词典abbreviation for research and development : the part of a business that tries to find ways to improve existing products , and to develop new ones 研究与开发（research and development的缩写） 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。 返回 R and D