释义：人如果没有喜事，精神就会萎靡不振；当运气不好、处境艰难时，往往会感到更加落寞和失落。

I have always believed that the way to make money is to buy when everyone else is selling and to sell when everyone else is buying.

The trouble with her is that she lacks the power of conversation but not the power of speech.

The harder you work, the luckier you get.

股市中充满了知道一切价格但不知道任何价值的人。

在商业中，快速适应市场变化的能力比任何静态优势都更有价值。