尽管已经有过很多关于青少年和电子屏使用的研究了，这个方法还是被视为第一个用来衡量孩子对屏幕媒介上瘾程度的工具。

Though much research exists on adolescents and screen use, this is considered as the first tool to measure how addicted children are to screen media.

youdao

其实我很可能已经有过类似经历。

I've probably already done this.

youdao

实际上我已经有过好几次那样的经历。

I've actually been scared a few times.

youdao

It also is the case that probably many of you have already read it and possibly studied it in school and talked about it.

也有可能是你们很多人都已经读过,也有可能是在学校的时候就学过并讨论过的。

耶鲁公开课 - 现代诗歌课程节选

So where we had left off with was we'd fully discussed up to the point of considering homonuclear diatomic molecules, so molecules that both have the same nucleus.

我们上次,讲到了我们,已经讨论过同核双原子分子，也就是有相同原子和的分子。

麻省理工公开课 - 化学原理课程节选

So, what about his accomplishments, besides the ones I've already mentioned, to which I will return in a little bit.

那么,彼得的成就有哪些呢,除了我已经提到过的那些,我等一会还会再提

耶鲁公开课 - 欧洲文明课程节选