Research and development
[计] 研究与开发, 研究与发展\\n[化] 究研与开发
🧩 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
It's a safe bet that he'll get the job.
他能得到那份工作，这几乎可以打保票。
You can ease up.
你就放心好了。
Perhaps she understood me because she herself had always had very weak eyes.
当我回顾那些岁月时，我深深地为安妮的智慧所打动。她理解我，也许是因为她本向来视力就很弱。