我做了一些研究，发现他们关注于创业。
I did some research and found that they concentrated on entrepreneurship.
我做了一些研究，发现一些很酷的对称图片。
I've done my research and found some cool symmetrical images.
我做了一些研究，没能找到任何可靠的统计数据。
I did some research and am unable to come up with any reliable statistics.
我又做了一些研究。
我注意到你也做了一些关于管理会计的研究。
And I noticed that you have also done some research on the management accounting.
在做了一些研究后，我发现这两个基本方法。
After doing some research I found two basic approaches for this.
我对这个行业的其他公司做了一些研究。
I have done some research on companies in the field in which I would like to work in.
我对这个行业的其他公司做了一些研究。
I have done some research on companies in the field in which I would like to work in.
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