Marginal efficiency of investment
[经] 投资的边际效率
🧩 词语组成解析
marginal
['mɑrdʒɪnl]
adj. 边的，边缘的;旁注的;临界的，最低限度的;收入仅敷支出的;
margin边缘 + al 表示属于...的、具有...性质的、如...的 → a.微小的,不重要的;仅以微弱多数票获胜的;记在页边的
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
Where are you from?
你是从哪儿来的？
I want to go coach, and I'd prefer a morning flight.
我要普通舱，还有，我喜欢早上的班机。
He read many books and paused in his work at six every evening for prayers, even when he was with other world leaders.
他阅读很多的书，每天傍晚六点钟，他就要暂时停下工作去做祈祷，甚至与世界上别的领袖在一起时也这样。