Algebraic geometry is the study of zeros of polynomials.

Sustainability must be at the core of every decision we make in the mining sector.

I have to remind myself that some birds aren't meant to be caged. Their feathers are just too bright. And when they fly away, the part of you that knows it was a sin to lock them up DOES rejoice. Still, the place you live in is that much more drab and empty that they're gone. I guess I just miss my friend.

可持续性不是一种选择，而是唯一的出路。

今天我们播下的每一粒种子都是对明天粮食安全的投资。

The six colors， including the white background， represent the colors of all the world's flags ... this is a true international emblem.