If you wanted to buy a company up and own it yourself completely, you could conceive of buying all the shares in the company.

如果你想独资买下一个公司,可以买下该公司的所有股票

耶鲁公开课 - 金融市场课程节选

That's why I think it's important to buy things that you, yourself know about and actually love,

所以我觉得要买你自己了解和真正喜欢的东西，这很重要，

关于购买艺术品 - SpeakingMax英语口语达人