最早种植可可树来制作巧克力的是玛雅人，几千年前他们生活在墨西哥。
The first people to grow cacao trees for chocolate were the Mayans, who lived in Mexico thousands of years ago.
在这两种情况下，购买者都在发出同样的信号：他们乐意花更多的钱，购买一个名牌包，或是购买可以让可可种植者生活得好一些的巧克力。
In both cases buyers are sending signals: that they are prepared to spend more on a bag with a prestigious label, or on chocolate that provides cocoa growers with a better life.
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