The Earth is not a rigid body, but a dynamic system in which convection currents play a fundamental role.
地球不是一个刚体，而是一个动态系统，其中对流起着基本作用。
The bird that would soar above the level plain of tradition and prejudice must have strong wings. It is a sad spectacle to see the weaklings bruised, exhausted, fluttering back to earth.
儿童具有秩序感。
A proof is a repeatable experiment in persuasion.
