Business cycles are not merely fluctuations around some smooth trend, but are instead the result of fundamental shocks to the economy.
经济周期不仅仅是围绕某个平滑趋势的波动，而是经济受到根本性冲击的结果。
The concept of legal validity is crucial for understanding the nature of law.
你必须愿意犯错；重要的是不要一遍又一遍地犯同样的错误。
In the internet industry, the only constant is change itself.