Buy low sell high.

低买高卖。

youdao

These virtual market makers 'trading volume is far higher than the other investors, with a small inventory percentage, and buy low sell high at the same time.

这些虚拟做市商的“正常交易”量远远大于其他投资者，其存货百分比则远小于其他投资者，并在通过低买高卖赚取利润。

youdao

When you buy high and sell low, it's really hard to generate returns, even if you do it with great enthusiasm.

当你高价买入低价卖出时，即使你带着极大的热情做它，也很难产生收益的。

youdao

When you buy high and sell low it's really hard to generate returns, even if you do it with great enthusiasm and great volume.

当你高价买入低价卖出时,是很难产生回报的,不管你有多大交易热情或有多大交易量

耶鲁公开课 - 金融市场课程节选

With buy and hold the tendency is to buy high and sell low, rather than using the day to day volatility to buy low and sell high.

FORBES: Welcome To The New Bear Market For Stocks

The arbitrage scheme exploits that system using the basic buy low, sell high principle: A Web site arbitrageur uses a low-priced keyword to lure traffic and then redirects that traffic to another site that contains little content and is stacked with ads that earn a much higher price.

FORBES: Magazine Article

One of the most basic principles for successful investing is to buy low and sell high.

FORBES: Make Sure To Sell The Right Stocks At The Right Time In Retirement