Differential earning
[經] 差別(差量)收益
?? 詞語組成解析
differential
['d?f?'r?n??l]
adj. 差別的;特意的;[數]微分的;[機，物]差動的;
n. [數]微分;差別;工資級差;[機]差動器;
di, dif, divid 表示”分開”;”取消”,”否定”;”不同”
earning
['?:ni?]
n. 所賺的錢，收入;
v. 賺得( earn的現在分詞 );掙錢;生（利）;獲（利）;
??? 情景例句
Why don't you look at some houses, Marilyn?
何不去看一看房子呢， Marilyn？
I'm not waiting for anybody.
我不在等任何人。
No. He just asked if you could ring him back. Here's the number.
沒有，他只問你能不能給他回一個電話。這是他的電話號碼。