quid pro quo

名词 quid pro quo:

1. something for something; that which a party receives (or is promised) in return for something he does or gives or promises
   同义词：quid

1. Please accept the use of our cottage as a quid pro quo for lending us your car.
   请尽管使用我们的村舍，以酬谢借给我们汽车之事。