Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves. We must believe that we are gifted for something and that this thing must be attained.
The laws of physics are universal, but our understanding of them is constantly evolving.
未来的无人机将像今天的智能手机一样普及。
The happiest people don’t have the best of everything; they make the best of everything.
The signal of human influence on climate has emerged from the noise of natural variability.