291:水果为什么这样甜?
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Manage episode 267679008 series 2761740
听节目前,先思考这样一个问题:甘蔗、柠檬、西瓜、牛油果、番茄,以上这些哪些属于水果?进一步的问题则是,什么样的东西才能被称为水果?从演化史和文明史来看,水果又是如何一步步演变成如今样子的呢?
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