Decreasing marginal cost
[经] 递减边际成本
🧩 词语组成解析
decreasing
[di'kri:siŋ]
adj. 减少的，渐减的;
v. （使）缩短，减小，减少( decrease的现在分词 );
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
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
All right. Is...is Susan coming?
好吧， Susan来吗？
I remember the girl whose father owns a tailor shop.
我记得那个女孩的父亲有一家裁缝店。
Large groups of Native Americans were forced to move away form their old hunting grounds.
成批成批的美洲土著人被迫从他们原来的狩猎场迁走。