但我不肯定的是，即使在英国，如你所了解的，环保计划已是不争的事实了，我不肯定那些年纪更大的人是不是也有同样的参与程度。

And I'm not sure, even in Britain, where, you know, as we've heard, plans are taking hold, I'm not sure that the older generation are really getting into it quite as much.

youdao

我们的一个成员施加一定生长灯，这是更昂贵的，我不肯定，这个价格是值得的。

One of our member applied speciel grow lights, it's much more expensive, and I'm not convienced about that it worth that price.

youdao

不肯定什么是做在灌木的蜥蜴。

Not sure what is the Lizard doing in the bush.

youdao

I was curious; I was even a user assistant at the time, I was certainly a geek at the time and yet I had no sense really of what actually went on in a classroom like this.

我很好奇，在当时我是一名助教，那时我肯定是一个怪胎,我真的不知道,这样的课上讲的是什么东西。

哈佛公开课 - 计算机科学课程节选

And he says, "No, no, I'm too miserable and wretched," And the guy says, "Oh, you must be some kind of a merchant."

他推辞道,不,我的腿脚不利索,那些人答道,你肯定是到处兜售的商人

耶鲁公开课 - 古希腊历史简介课程节选

If you don't know that somebody should've taught you that in the 6th Grade or the 4th Grade or the 1st Grade or somewhere.

如果你不知道,那你们肯定是忘了,在六年级或四年级的时候老师肯定讲过,或者一年级,无所谓具体什么时候

耶鲁公开课 - 美国内战与重建课程节选