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一件事不一定是真的或假的;它可能既是真的又是假的。
Coal miners don't just dig in the dirt, they dig for progress.
时间是一位伟大的老师,但不幸的是它杀死了所有的学生。
True leadership is measured by the impact you have on others.
成功是对任何怀疑你的人最好的报复。
The best way to predict the future is to create it.
Mathematics is the most beautiful and most powerful creation of the human spirit.