He should never buy a stock because it has gone up or sell one because it has gone down.

他决不应该因某一股票已经上涨就买入，或是因某一股票已经下跌就抛出。

youdao

He should never buy a stock because it has gone up or sell one because it has gone down.

他决不应该因某一股票已经上涨就买入，或是因某一股票已经下跌就抛出。

youdao