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来源:雅诚德英语网
We could not happily have remained ignorant forever... the significance of our lives and our fragile planet is then determined only by our own wisdom and courage.
我们不可能甘心情愿永远保持无知。……因此我们生命和我们这个易碎的星球的意义只能由我们自身的智慧和勇气来决定。