互換

(1)the act of giving something in return for something received; "deductible losses on sales or exchanges of property are allowable"

(2)何かを受け取ったお返しに、何かを与える行為

(3)an event in which one thing is substituted for another; "the replacement of lost blood by a transfusion of donor blood"

(4)あるものが別のものの代わりになる出来事

(1)