但是，人们通常调整显示器位置，而不会前后左右地晃动脑袋。

But people are always turning the laptop display to get the best image.

youdao

前后左右地环视你的听众，选择一个人作为焦点，然后再换另一个人。

Look to the back and front and from side to side of your audience, selecting an individual to focus on and then moving on to someone.

youdao

她三十五岁左右—确切地说是三十六岁。

She's in her mid-thirties—thirty-six to be exact.

《牛津词典》

If people in the room choose randomly between 1 and 100, then the average is going to be around 50 say and two-thirds of 50 is around 33, 33 1/3 actually.

如果大家在1到100之间随机选择,平均数会是50左右,而50的2/3大概是33,确切地说是33 1/3

耶鲁公开课 - 博弈论课程节选

Well, the figure I saw last was a number too small to be mentioned; I mean, to say you just can't really say how much it is, but all right, two percent.

这个数字简直,小的可忽略了,我的意思是说你实在说不出精确地数字,但实际上只有2%左右

耶鲁公开课 - 古希腊历史简介课程节选

And if you haven't yourself dived into your own problem set zero, whose PDFs are available online, realize that if something like this, given that it's a minute or so long, kind of looks you know, despite the cutesiness of it, kind of overwhelming in that you don't really know where to begin, how could you possibly sketch out this whole story line.

如果你还没有真正沉下心来,看习题集0，网上可以提供这些PDF文件，好好地感受一下像这样的东西，假定只有一分钟左右这么长,先不管它外表看起来是否可爱,也不管它让人无从下手的压迫感,你怎样才能勾勒出,整个故事最初的框架呢？

哈佛公开课 - 计算机科学课程节选