Life is like a piano. The white keys represent happiness and the black keys show sadness. But as you go through life's journey, remember that the black keys also create music.
To do mathematics is to engage in an act of creation and discovery simultaneously.
The concept of law is a complex one, involving not only rules but also principles, policies, and standards.
成为作家意味着不断探索。
Innovation is the market introduction of a new technical process, product, or organizational form.