Opportunity cost principle
[经] 机会成本的原则
🧩 词语组成解析
opportunity
[ˌɑpɚˈtunɪti, -ˈtju-]
n. 机会;适当的时机良机;有利的环境，条件;
op=ob靠近 + portun=harbor港口+ ity 表名词 → 向港口靠近 →机会
cost
[kɔst]
n. 价钱，代价;花费，费用;牺牲;[用复数][法律]诉讼费;
vi. 价钱为，花费;估计成本;
vt. 付出代价;估价;使丧失;使付出努力;
🗣️ 情景例句
I'd like to give thanks for Grandpa coming to live with us.
我感谢爷爷到这儿和我们一起生活。
The spoon is dirty, Would you bring me a clean one, please?
这汤勺是脏的，请你拿个干净的给我。
Who could count the times Annie tried, failed, and then succeeded?
谁能数得清安妮尝试、失败直至最后成功的次数？