| 单词 | r & d |
| 释义 | r & d R&D, R & D, R and D n: abbreviation (research and development) SC 研究与开发 SC 研发 My brother works in R&D at a large company in Silicon Valley. research and development n: (business: creation of new products, etc.) SC 研发 SC 开发 kāi fā TC 開發 |
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