在过去，做时间表是很简单的，但现在我们有更多的课程，让这个过程变得复杂的是，当中许多课程还有不同选择。

In the past, doing the timetabling was quite simple but now we have a lot more courses and what's made it complicated is that many of them have options.

youdao

好的，但现在我们有节目要做，你的报道是有关什么的？

Yeah, but right now we have a show to do. What's your story?

youdao

但现在我们有令人信服的证据，证明外星人在过去的行动足以影响人类历史-并可能继续这样做！

Now we have compelling evidence that extraterrestrials acted in the past to influence human history - and may continue to do so!

youdao

So there already are some approaches like this that are working, but there's more that needs to be done.

现在我们已经有相关的治疗方法,但还有很多地方需要改进

耶鲁公开课 - 生物医学工程探索课程节选

But they had several other books that we now call the Apocrypha, such as Judith or Tobit or the 1 and 2 Maccabees.

但他们也有我们现在称作伪经的书，比如朱迪丝书，托比特书和马卡比一书二书。

耶鲁公开课 - 新约课程节选

So you pick a better material like iron and steel, that makes a better bridge, we know that now because we have experience with bridges, but still your bridge might fail.

你选择了钢铁作为材料,来造了一座更好的桥,我们现在能够明晰这一点,是因为在造桥这件事上我们现在很有经验,但即使是我们现在造的桥也仍然会倒塌

耶鲁公开课 - 生物医学工程探索课程节选