Operations research
n. <美>作业研究, 运筹学
🧩 词语组成解析
n. 运作；运营；业务操作（operation的复数）
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
He's busy preparing for class.
他忙着准备功课。
They are used to seeing him every day.
他们习惯了每天见到他。
The sun was shining and the sky was crystal clear.
阳光闪烁，天空湛蓝。