What is down will go up. At the same time, you have to be prepared for what is up to go down.

What is down will go up. At the same time, you have to be prepared for what is up to go down.

下跌的东西会上涨。与此同时，你必须为将要发生的事情做好准备。

-- William Shatner 威廉·沙特纳