礼尚往来
- na.Courtesy requires a return of visits received.
- 网络One good turn deserves another; Courtesy calls for reciprocity.; courtesy demands reciprocity

礼尚往来
1.Courtesy requires a return of visits received.; As the call, so the echo.; Courtesy demands reciprocity.; deal with sb. as he deals with you; Etiquette demands [requires] reciprocation.; Etiquette requires reciprocity.; pay sb. back in his own coin; Scratch my back and I will scratch yours.
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