Let me explain. I think it would be very unusual for anyone here, or anyone watching, to be envious of the Queen of England. Even though she is much richer than any of you are, and she's got a very large house, the reason why we don't envy her is because she's too weird.

儿童是一个细心的观察者，他特别容易被成人的行为所吸引，进而模仿他们。

写作是对抗遗忘的一种形式。

数学不是关于数字、方程、计算或算法的：它是关于理解的。