谢谢各位reciprocity 相互交换的原则或实践; （尤指）互相让步或互惠: reciprocity in trade (between countries) （国与国之间的）贸易互惠.再给你几个例子：reciprocal junction 互易性接头 reciprocal ferrite switch 互易性铁氧体开。
礼尚往来 (1)courtesy demands reci-procity (2)deal with a man as he deals with you;pay a man dack in his owncoin;give as good as one gets 词典上的全部 。
Propriety suggests reciprocity. It is not propriety not to give out but to receive, or vice versa.
礼尚往来是人之常情。
A principle of human behavior is reciprocity.中国有句俗语叫“礼尚往来”，正好反映了这一现象。
Thereis saying "Courtesy demands reciprocity" in China, and this saying justreflect that phenomen。
礼尚往来:courtesy demands reciprocity Friendships cannot stand always on one side.礼尚往来。
We gave the Smiths a bottle of gin last Christmas, so this year they gave us a bottle of Scotch to even things up。