Business is very simple: Sell at a profit and keep at it.

商业其实很简单：在利润基础上进行销售，并维持下去。

youdao

People keep buying houses, though, because they think the risk of paying a high mortgage will pay off if they can sell at a profit.

但人们还是照样买房子，因为他们认为只要卖出去能赚一笔，即使冒着支付高房贷的风险也是值得的。

youdao

We should be able to sell the house at a profit.

我们卖掉这座房子应该可以获利。

《牛津词典》

In regular short-selling,traders borrow assets and sell them at a set price, hoping they can make a profit by buying them later at a lower price.

VOA: standard.2010.05.19

But companies will not invest in the supply of a good they cannot sell at a profit.

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Speculative sellers who had bought at high prices to sell at a profit found themselves with worthless goods on their hands.

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Members of the congregation used the money to buy materials and make products which they could then sell at a profit.

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