Mathematics is a living subject, constantly evolving with new ideas and discoveries.
数学是一门活生生的学科,随着新的思想和发现不断演变。
The purpose of art is to make the world a better place.
I sent my Soul through the Invisible, Some letter of that After-life to spell: And by and by my Soul return'd to me, And answer'd "I Myself am Heav'n and Hell."
The only real prison is the one inside your head.
如果我们想保护海洋生物多样性,可持续的捕捞方式不是一种选择,而是一种必要。