One reason I said there isn't much of this sort is because until recently philosophers did not treat films seriously.

之所以说用哲学解读电影并不常见,是因为直到近来,哲学家们才认真看待电影。

麻省理工公开课 - 电影哲学课程节选

But in the case of film studies, that was also a taboo subject until recently.

不过电影研究，一直以来也无人问津,电影研究的热潮也就是最近几十年的事情。

麻省理工公开课 - 电影哲学课程节选

Until recently, most of the research was conducted, was done using questionnaires.

直至最近，多数完成的研究，使用的都是问卷方式。

哈佛公开课 - 幸福课课程节选