我们之间的友谊是相互的，他总是帮助我，我也会帮助他。

Our friendship is ___reciprocal - he helps me and I help him in return.

他们的友谊建立在相互尊重的基础上。

Their friendship is based on ___reciprocal respect.

在这份协议中，双方承担的义务是相互对应的。

In this agreement, the obligations of both parties are ___reciprocal.