心灵是一个动态的过程系统。
The mind is a dynamic system of processes.
The laws of physics are universal, and testing them in extreme environments like the galactic center is essential.
To be a writer does not mean to preach a truth, it means to discover a truth.
What you actually pay for something is at least twice the listed price because of the energy， time， money needed to set it up， learn， maintain， repair， and dispose of at the end. Not all prices appear on labels. Actual costs are 2x listed prices.
对于好的建议，你唯一能做的就是传递它。它对自己从来没有任何用处。
The discovery of stars orbiting the supermassive black hole at the galactic center was a turning point in astrophysics.