When you think about it, it would have seemed like a crazy idea, even a few years ago, that I would swap my stuff with a total stranger whose real name I didn't know and without any money changing hands.
你想想， 这个即使在几年前听起来都很疯狂的主意， 和一个完全不认识的人交换我们的物品， 而且我还不知道那人姓甚名谁 交易还不涉及任何金钱。