gift exchange的用法和样例：
例句
- Apart from any specific office rituals,gift exchanges among coworkers are the same as gift exchanges among friends.
除了特殊的办公室习俗，同事间的礼物交换同朋友间的礼物交换是一样的。 - Living in Papua New Guinea, one is struck by the resources expended on gigantic ceremonial gift exchanges.
生活在巴布亚新几内亚，消耗在规模庞大的礼仪性礼物交换上的资源令人印象深刻。
