Equimarginal principle
[经] 平衡边际原则
🧩 词语组成解析
🗣️ 情景例句
If you had to describe the book in one sentence,
假如要你用一句话来描述这本书，
A man who has friend must show himself friendly.
与朋友交，必须友好相处。
5 What makes you feel that you are doing well?
5。是什么使你感到自己干得不错？