Mathematics is a living subject, constantly evolving and growing.
城市是一个有机体，不断演变和发展。
最艰难的决定往往带来最大的回报。
Sustainability in baking isn't just a trend; it's a responsibility.
The true cost of unsustainable fishing is far greater than what we see on the surface.
The world is a cruel place, and art is its revenge.