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决不要害怕刹那――永恒之声这样唱着。
We teach a subject not to produce little living libraries on that subject, but rather to get a student to think mathematically for himself.
虽然有千辛万苦、千难万阻,哪怕我只是莹虫之光,结局是粉身碎骨,身败名裂,依然在所不辞、初心不改。
To study history is to learn the grammar of time.