在我看来有一下7方面的障碍需要他们克服。

I see 7 obstacles they will need to address.

youdao

有一下他差点没抓住一根分枝，他得使劲摆手臂以稳定自己的身体，然后他蹲下来休息。

Once he almost missed a branch and had to swing his arms wildly before he could stabilize his body. Then he squatted down to rest.

youdao

检查一下屋顶上是否有瓦被风刮得挪位。

Check for roof tiles that have been displaced by the wind.

《牛津词典》

You'll recall that at the very end of class we pulled up this little demo that looked like this.

你们可以回忆一下，我们曾,有个这样的演示。

哈佛公开课 - 计算机科学课程节选

I haven't said how I'm going to get those sorted lists, but imagine I had two sorted lists like that.

我还没有说明我怎么才能得到已排序的列表,但是想像一下我现在已经有,两个已排序好序的列表了。

麻省理工公开课 - 计算机科学及编程导论课程节选

So, let me go had and let's swivel this around for just a moment so we have a blank slate and now what's really going on?

我把它旋转一下,这样就有一块空白了,到底发生了什么呢？

哈佛公开课 - 计算机科学课程节选