The concept of a particle is only an approximation, valid in the classical limit.
粒子的概念只是一个近似,在经典极限下有效。
故事是让无形之物可见的方式。
The physicality of the work is very important - it has to have a presence.
Education is the foundation of sustainable forestry—people protect what they understand.
The two greatest enemies of the equity fund investor are expenses and emotions.