炒股者赚取股票买卖的价格差。

Market makers earn their livings from the spread between buying and selling prices.

《柯林斯英汉双解大词典》

钱是用来买卖的一种媒介。

Money is a medium for buying and selling.

《新英汉大辞典》

youdao

And keep in mind when Crane wrote those lines too, it was illegal to buy and sell wine in this country.

记住克莱恩写下这些诗句的时候，禁酒令还在适用，买卖酒都是非法的。

耶鲁公开课 - 现代诗歌课程节选

The second principle is did the distribution arise from the operation of free consent, people buying and trading on the market?

第二条原则，财富的分配是否,基于自由达成的交易，基于自由市场的买卖？

耶鲁公开课 - 公正课程节选

Those are institutions that arrange for or manage the buying and selling of financial assets, such as the New York Stock Exchange.

经纪机构是指那些安排或,管理买卖的,金融资产的机构,比如说纽约股票交易所

耶鲁公开课 - 金融市场课程节选