Although I gave him many presents, I had no reciprocal gifts from him.

虽然我给他很多礼物，但我没有收到过他给我的礼物。

youdao

A complete diallel cross (no reciprocal hybrid) was made using 5 wheat mutants with distinctive characters.

本试验选用5个性状各有特色的小麦优异突变体进行完全双列杂交(无反交)。

youdao

Also, world trade is no longer two dimensional or necessarily reciprocal.

FORBES: Not Your Father's MBA

On a later reciprocal visit, Lee in turn saw, to no surprise, that China was similarly flowering--only by an order or two of magnitude, on a Chinese scale.

FORBES: Autumn of the Tigers