R
英 [ɑ?]
美[ɑr]
- n. 英語字母中的第十八個字母
- abbr. 電阻（resistance）；比率（ratio）；醫生處方（recipe）
考試真題
- But it is really happiness that's linked to investment, or could something else about happier cities explain why firms there spend more on R and D?
2016年考研真題（英語二）完形填空 Section Ⅰ
- Especially, firms in happy places spend more on R and D .
2016年考研真題（英語二）完形填空 Section Ⅰ