对黑洞的研究彻底改变了我们对空间和时间的理解。
The study of black holes has revolutionized our understanding of space and time.
Power is not given to you. You have to take it.
All your dreams can come true if you have the courage to pursue them.
Without food, man can live at most but a few weeks; without it, all other components of social justice are meaningless.