Now, probably the form of power that we most readily associated with John Milton involves his position at the dead center of the English literary canon.

我们最容易由约翰·弥尔顿,联想到的力量形式很可能,与他处在英国文学经典的中心位置有关。

耶鲁公开课 - 弥尔顿课程节选

I mean, you can go anywhere and everywhere, and USF is located in the heart of San Francisco, so.

我是说，你去哪儿都行，旧金山大学坐落在旧金山的中心位置。

关于旧金山大学校园 - SpeakingMax英语口语达人

So control of these international highways brought a great deal of wealth to the area, but the central location was a double-edged sword, because in times of peace it would bring prosperity, but, of course, in times of war the land was perpetually invaded as armies would crisscross the land going off to do battle with the great powers.

对这些国际要道的控制,给这个地区带来了大量的财富，但这处于中心的地理位置也如同一把双刃剑，因为在和平时期它带来繁荣，但，在战乱时期，这块土地常常被侵略,当军队在此刀刃相交,或者经过与强国征战。

耶鲁公开课 - 旧约导论课程节选

Often a good thing to start with is to put the lowest ionization energy atom in the middle, and if you don't have charge separation then go with that structure, but if you do find you have a lot of separation, such as the case in negative 2, positive 2, and minus 1, then you want to say wait a second, this is really bad in terms of formal charge, let me go ahead and see what other options I have here.

通常一开始把电离能最低的原子,放在中心位置就很好了，如果你发现电荷没有分开,那么这个结构就没问题了，但是如果你发现有很多分开的电荷，比如这种情况，有负二，正二和负一，那么你会想要说等一下，从形式电荷来看这很不好，让我去看看其它可能的选择。

麻省理工公开课 - 化学原理课程节选

If you had to pick a central focus of where the Greeks were, it would be in the Aegean Sea. So that's useful to remember.

如果你要在古希腊寻找一中心位置,那就是爱琴海,所以这很容易理解

耶鲁公开课 - 古希腊历史简介课程节选

It's in very central location. It's two minutes away from the cafeteria,

位置很靠中心。两分钟到食堂，

布朗的宿舍公寓 - SpeakingMax英语口语达人

So, which atom would you expect to be in the center of a Lewis structure for thionyl chloride?

那么，大家认为那个原子应该在,亚硫酰氯的路易斯结构的中心位置呢？

麻省理工公开课 - 化学原理课程节选