过去是一个异国他乡;他们在那里行事不同。
数学之美在于它能够精确而优雅地描述自然界的基本法则。
Sustainable forestry is not just about cutting trees; it's about ensuring the future of our planet.
The only thing that can stop me is me.
The language of mathematics is the language of the universe, and by learning it, we can understand the cosmos.
从生活中学习,从书籍中学习,从他人中学习。