英语词汇“research and development”的读音、翻译、释义、用法及例句-范文大全网

词汇	research and development
释义	research and developmentˌresearch and deˈvelopment / / noun [uncountable] (abbreviation R & D) (~~business商业~~) (in industry, etc.) work that tries to find new products and processes or to improve existing ones研究与开发；研发
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