你体内的每个细胞都承载着数十亿年前的故事。
Every cell in your body carries a story billions of years old.
"Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence."
对幼儿来说，妈妈的声音是具有特殊意义的参照物。
The concept of infinity is not just a mathematical abstraction, but a physical reality.
I stand up for what I believe in, and I don’t worry about what others think.
学习数学的唯一方法就是做数学。