The greatest risk lies in not knowing what you're doing.

也许世界上也有五千朵和你一模一样的花，但只有你是我独一无二的玫瑰。

气候变化不是遥远的威胁，它正在重塑我们今天的森林。

If you lose or forget to bring a cable，adapter or charger，check with your hotel. Most hotels now have a drawer full of cables，adapters and chargers others have left behind，and probably have the one you are missing. You can often claim it after borrowing it.

系统的稳定性取决于开环传递函数在复平面上的行为。

大多数人在紧急的事情上花了太多的时间，在重要的事情上花的时间却不够多。