他们脑海里没有这个概念。

They didn't have the concept firmly in mind.

youdao

我想可能是他们当时并没有这个清晰的概念。

I think maybe it's because they didn't have the concepts down.

youdao

所以虽然40年里我们没有这个制度，但是人们有正义的概念。

So although the institutions have been unavailable for 40 years, people understand the concept of justice.

youdao

So there can be no "raw" without, in a certain sense, the prior existence of "cooked."

所以，从某种意义上来讲，如果没有“熟食“这个概念，就不会有“生食“的概念“

耶鲁公开课 - 文学理论导论课程节选

We've got the concept, but we haven't quantified it yet.

我们有了这个概念，但是我们没有量化它。

麻省理工公开课 - 固态化学导论课程节选

They didn't have the concept firmly in mind.

他们脑海里没有这个概念

耶鲁公开课 - 金融市场课程节选