互ㄏㄨˋhù通ㄊㄨㄥtōng有ㄧㄡˇyǒu無ㄨˊwú

相互交換以滿足各自的需要。如：「我們彼此互通有無，合作一定會很愉快。」

英mutual exchange of assistance (idiom), to benefit from each other's strengths and make up each other's shortfalls, to reciprocate with material assistance, scratch each other's back