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气候变化不是对森林的未来威胁,而是现在正在运作的电锯。
Climate change isn't a future threat to forests—it's the chainsaw at work right now.
学习达到快乐的境界就成功了。
Life is too short to worry about what other people think.
数学证明不仅仅是验证,而是一个揭示更深层次真理的故事。
I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.