| 单词 | research and development |
| 释义 | reˌsearch and deˈvelopmentnoun [u] (abbr r & d) (in industry, etc 工业等) work that tries to find new products and processes or to improve existing ones 研究和开发；研发 |
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英汉双解词典收录171353条英汉汉英双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。