Research and development investment
[经] 研究和发展(开发)投资
🧩 词语组成解析
research
['risɝtʃ]
n. 研究，追究;探讨，探测;调查;探索;
vi. 做研究;探究;（从市场调研中）得出所预测的结果;
vt. 从事…的研究，为…而做研究;
re(again)+search(to go round)→研究；调查
and
[ənd, ən,ænd]
conj. 和，与;而且;于是，然后;因此;
🗣️ 情景例句
I see you're in a good mood.
我看你心情很好。
Would you mind if I opened the window?
我开窗，可以吗？
Kidnappers are rarely interested in animals, but they recently took considerable interest in Mrs.Eleanor Ramsay's cat.
绑架者很少对动物感兴趣。最近，绑架者却盯上了埃莉诺。拉姆齐太太的猫。