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每部电影都是一次新的挑战。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
The journey of scientific discovery is filled with challenges, but it is also incredibly rewarding.
I want to stand as close to the edge as I can without going over. Out on the edge you see all kinds of things you can't see from the center.
The West is not a place, it's a state of mind.