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When public speaking， pause frequently. Pause before you say something in a new way， pause after you have said something you believe is important， and pause as a relief to let listeners absorb details.

The essence of computational complexity is to understand the limits of what can be computed efficiently.

愛是一切問題的答案。

你越是深入記憶，就越不確定。

孩子有超強的記憶力，當孩子可以動手操作而僅用眼看時，會記得更好。