It refers that the holder buy or sell one option at strike price on a set date.

即持有者在某一约定日期按协定价格买入或卖出一份期权。

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

No one can sell you a guide or solution that will give you what you need to liberate yourself.

没有人能卖给你一份指南或者解决方案，从而把你解放自己所需要的东西给你。

youdao

Now in Atlanta, Georgia, she owns two houses because she can't find a way to sell or rent one of them.

CNN: Breaking the taboo: Talking money with your family

As part of that process we will have to sell one or two players... but I am not looking to sell players on a fire-sale basis.

BBC: Administrator vows to save debt-ridden Portsmouth

Being able to code, or design, or sell or run marketing campaigns or do one of the critical things for your concept, all by yourself makes a big difference.

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