在过去的几个世纪里，埃特纳的低山坡都是由人类的双手开垦的，人们利用肥沃的土壤来种植葡萄、苹果和坚果。
Over the centuries, Etna's lowest slopes have been shaped by human hands to take advantage of rich soils for growing grapes, apples and nuts.
在过去的几个世纪里，很多人声称自己会读心术。
Many people across the centuries have claimed they could read other people's minds.
在过去的几个世纪中，人类的知识量呈指数状增加。
The amount of human knowledge has increased exponentially over the past few centuries.
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