我们必须尊重土地,因为它是我们一切工作的基础。
We must respect the land, for it is the foundation of all we do.
化学之美在于它能解释看不见的事物。
The universe is a pretty big place. If it's just us, seems like an awful waste of space.
身份不是固定的;它是流动的,不断演变的。