Operational research
出国 Abroad[经] 运筹学
🧩 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
🗣️ 情景例句
Thanks ... for what?
谢什么？
He that marries for wealth sells his liberty.
为财富而结婚就是出卖自由。
no sunset so beautiful that it does not waken the vision of a greater beauty, a vision which passes before it is fully glimpsed,
美丽的落日总会引起一个更加绚丽的景象未及饱览便一闪即逝，