经济周期不仅仅是围绕确定性趋势的波动;它们代表了趋势本身的转变。
Love is not the easy thing.
The best way to predict the future is to create it.
The best way to learn mathematics is to do mathematics.
我们唯一需要害怕的就是害怕本身。
Sustainability is not a style, it's a responsibility.