不要因为股票的名称好听就买，要看公司的实际业务。

Do not buy stocks because the name sounds good; look at the actual business.

不容易指的是看懂生意不容易，简单说的是只有看懂生意是重要的。别人怎么看跟你有什么关系？当股票下跌的时候，你心里充满了恐惧，那就说明你买了你不懂的公司。

Not easy means it's not easy to understand a business. Simple means that only understanding the business matters. What others think has nothing to do with you. When a stock falls and you're filled with fear, it means you bought a company you don't understand.

除非你真的了解自己在干什么否则什么也别做。

Unless you really understand what you're doing, don't do anything.

了解你所持有的公司，并且知道你为什么持有它。

Know what you own, and know why you own it.