可持续性不是一个流行词,而是长期成功的商业必要条件。
The saddest thing about love is that not only that it cannot last forever, but that heartbreak is soon forgotten.
Sometimes I just feel like, you know, I'm stuck in a rut. I just go through the motions. I don't enjoy it like I used to.
分析和代数之间的相互作用是数论中许多突破的驱动力。