人声是最初的乐器。
The voice is the first instrument.
In a state, the liberty of one citizen is a menace to the liberty of another.
科学不仅是理性的门徒,也是浪漫和激情的追随者。
无人机的未来不是替代人,而是帮助人更好地完成工作。
I think it's important to have a balance in life. You can't just work all the time; you have to have fun too.