Research and development program
[化] 研究与发展计划\\n[经] 研究和发展计划(方案)
🧩 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
What's wrong with wanting to be on the school board?
想进入联合校董会有什么错？
Please come in; you're right on time.
请进，你正好准时到来。
and it seemed as though everything she possessed had been tossed out and turned over and over.
看来她的每一件东西都被翻了出来，并且被里里外外看了遍。