您并不需要在一夜之间成为财务专家，毕竟，理解会计和财务决算之间的细微差别是需要长时间研究的事情。

You don't need to become an overnight financial guru, after all, understanding the subtleties of accounting and financial statements can be a lifelong pursuit.

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有时候不通过长时间研究他们的行为，很难将他们两个区分开。

It is sometimes difficult to tell the two apart without studying their behavior at length.

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我们最近在和一个客户合作，他们已经花费了很长时间研究他们的用户角色。

We recently worked with a client who had spent a long time working on their site’s personas.

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We looked last time at Saint Peter's declamatory speech in Lycidas, and we spent a lot of time on it.

我们上次读过了圣彼得在“利西达斯“中说的话，花了很长时间研究这段话。

耶鲁公开课 - 弥尔顿课程节选

I've gone over this argument at such length because, I hope it's clear, I think it's a pretty interesting argument.

我用这么长时间研究这个论证,我希望是清楚的，是因为这是个很有意思的论证。

耶鲁公开课 - 死亡课程节选

Clearly, important information is to be conveyed to students from people who settle in the fields for a long period of time.

显然，对某个领域,进行长时间研究的学者,会将重要的信息,传达给学生。

麻省理工公开课 - 媒体、教育、市场课程节选