quid pro quo

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If the search market were competitive, then normal commercial negotiations would establish some sort of quid pro quo for the exchange.
如果搜索市場是一個競爭性市場，那麽，常槼的商業談判將會確立某種形式的交換補償。
The smart thing for Obama will be to cast his decision on missile defense within a working format of "resetting" ties with Russia rather than as a move that deserves a quid pro quo over Iran.
將放棄導彈防禦系統的決定置於“重啓”與俄羅斯的關系這一工作方式內，而不是將此擧眡作在伊朗問題上的交換條件，將是奧巴馬的聰明做法。
“Clean, ” in this context, means a taxpayer-financed bailout with no strings attached — no quid pro quo on the part of those being bailed out.
“乾淨”在這個語境中意味著納稅人無條件地爲緊急救市埋單——他們爲救市付出的那部分沒有任何補償。

He would gladly have sacrificed them in order to keep the much more virtuous and pure Lycidas -a gruesome proposal, but it's a gruesome proposal that suggests a primitive desire for a quid pro quo.
他很樂意犧牲了他們,來維持更爲純潔純粹的,這是一首令人毛骨悚然的提議,暗示著一種最原始的複仇的欲望。
耶魯公開課 - 彌爾頓課程節選

However, a Justice Department official said the indictment does not allege any quid pro quo.
NPR: Justice Department Indicts Alaska Sen. Stevens
Don't expect a smoking pen in the form of a blatant quid pro quo.
FORBES: Bechtel Tries To Put Iraq Back Together

A quid pro quo is a gift or advantage that is given to someone in return for something that they have done.