Indeed, while buying at the right price may ultimately determine the profit gained, selling at the right price guarantees the actual profit, if any.

尽管在正确的价位买入股票的确会最终决定赚得的利润，但是，如果有获利的话，在正确的价位卖出股票可以确保获得实际利润。

youdao

What's really odd though (aside from an Internet giant actually selling a domain rather than buying one), is the price at which it sold.

这其中真正古怪的东西(除了一个互联网巨人竟然不是买域名而是卖域名)，是这个域名被出售的价格。

youdao

Buying houses for nothing and selling it after the price rises is speculative.

买了房什么也不干，等房子涨价后卖掉，这属于投机。

youdao

But instead of dropping price improvement or addressing customer problems, Lutnick slapped BrokerTec with a suit, claiming it had violated eSpeed's patents on such bond-trading conventions as the "work-up" (a practice that gave a trader, buying or selling at a given price, the right to execute all trading at that price until he's done) and "trading time" (the grace period a trader has to act under a work-up).

FORBES: Briefing Book: Howard Lutnick

Big investors have a hard time buying in without driving up the price or selling out without driving it down.

FORBES: Magazine Article

He suggests an equity collar--buying a put below the market price and selling a call above it to defray the cost.

FORBES: Monday Morning Quarterbacks