软件一直处于紧张状态。具有象征意义是任意完美的。但它也可以任意更改。
能源需求与环境保护之间的平衡是我们这个时代的挑战。
I don't let anyone else write my story.
Persistence is key in mathematical research; many great results come from looking at the same problem from different angles over and over again.