| 词汇 | research and development |
| 释义 | research and development 1 ENTRIES FOUND: research and development (noun) research and development noun research and development noun Learner's definition of RESEARCH AND DEVELOPMENT [noncount] : studies and tests that are done in order to design new or improved products研究和开发；研发 The company spends millions of dollars each year on research and development.公司每年都在研发方面花费数百万美元。 — abbreviation R & D |
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