exchange article by article的用法和樣例：
例句
- The system of barter was superseded by the use of money.
以物易物的制度被金錢的使用取代了。 - Once a year, the scattered Jawa clans gather for the great swap meet.Here, numerous sandcrawlers converge and the Jawas meet to exchange salvage.
散居的賈哇人一年會有一次盛大的以物易物交換集會，會有許多的沙爬者聚集在此，而賈哇人相聚以交換廢物料。
