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做科Your limitation—it’s only your imagination.

普视频粉笔酣墨饱网丝超In the midst of winter, I found there was, within me, an invincible summer.

千万Do something today that your future self will thank you for.物理The harder you work for something, the greater you’ll feel when you achieve it.

老师It’s going to be hard, but hard does not mean impossible.做科Keep your face always toward the sunshine, and shadows will fall behind you.