exchangesn.票据交换总额名词exchange的复数形式.exchangev.交换；兑换n.交换；交易所；兑换；交战exchange energy交换能exchange drives对轴exchange matrix交换基质exchange market外汇市场exchange stamps交换邮票exchange of POW交换战俘exchange centre交换中心exchange memory交换内存exchange theory交换说exchange agency代兑机构