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
What's your major?
你是什么专业的？
Progress is the activity of today and the assurance of tomorrow.
进展即今日的活动和明日的保证。
No.Later, in a few weeks' time I'll put the little plants in the earth.
不止。几星期以后，我要把菜秧移到地里。