村民们经常用鸡蛋换取蔬菜。
Villagers often ___barter eggs for vegetables.
他们在市场上用蔬菜交换鱼。
They ___bartered vegetables for fish at the market.
村民们经常用鸡蛋换取面粉，他们更喜欢这种以物易物的方式。
The villagers often exchange eggs for flour, preferring this ___bartering system.
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