森林的真正价值不是用板英尺来衡量的，而是用生物多样性来衡量的。
The true value of a forest is measured not in board feet, but in biodiversity.
The only way to understand a character is to understand their contradictions.
健康的国民是一个国家能拥有的最大财富。
在量子场论的领域中，真空并非空无一物，而是充满了虚粒子的沸腾大锅。