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The duty of man is the same in respect to his own nature as in respect to the nature of all other things.
Coal has been the backbone of industrial progress, but its future must balance economic needs with environmental responsibility.
解释:看见美丽的容貌就心悦,是人之常情。
真正的问题不是机器是否会思考,而是人是否会思考。
预测未来的最好方法就是自己去创造它。
The difference between good and great is the extra effort.