The realization that electronic properties can be topologically protected has revolutionized our understanding of solid-state physics.
Every setback is a setup for a comeback.
The true meaning of life is to plant trees, under whose shade you do not expect to sit.
We must have reverence when making products and be responsible to users.
从n对观测值的样本中获得的相关系数的可能误差是sqrt((1-r²)/(n-2))。