巴塞罗那的时间银行：用帮助交换时间
In the Gràcia area of Barcelona, there is a very special bank. It does not have any money inside. People do not put coins into it. Instead, they share their time and skills.
Every hour of help gives you one time credit. Maria teaches Spanish for one hour and earns one credit. Then she uses her credit for a small repair. Her neighbor fixes her old tap. No money changes hands.
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