You notice at the beginning one-two, At the beginning these chords are holding for four measures or a total of eight beats.

注意在开头，在开始的部分，和弦持续了4小节也就是8拍。

耶鲁公开课 - 聆听音乐课程节选

and then there's one eating club that's famous for being open until, like, four am,

有一家饮食俱乐部以营业到凌晨四点而出名。

有趣的吃东西协会 - SpeakingMax英语口语达人

What you'll do is every day for the next 30 days give me one cent, next day two, four, eight and so on.

你们要做的是在未来30天给我一分钱，第二天二分，然后是四分，八分，以此类推。

哈佛公开课 - 幸福课课程节选

But for now all you need to know is - that these four different kingdoms-- one was where we now have Greece, another one was where Syria is, another was Egypt, and then there was another further north, but that's not as important for us.

不过目前你们只需要知道,这四个不同的王国-,一个是当今的希腊，一个是当今的叙利亚，一个是埃及，还有一个在更北面的地方，不过对我们来说不是很重要。

耶鲁公开课 - 新约课程节选

But you don't know that there is an easy one for you down at number four 4 if you haven't bothered to look at number four.

但是你不知道,在数字4的时候会有一个简单的题目,如果你没有尝试去看数字。

麻省理工公开课 - 固态化学导论课程节选

He writes down this four- to five-minute composition note for note in just one sitting.

他便一口气,逐个音符地,写下了这段四到五分钟的作品

耶鲁公开课 - 聆听音乐课程节选

So if we still have an angle of a 109 . 5 degrees, and again, we still have four unpaired electrons available for bonding, we can make one of those bonds with another s p 3 hybridized carbon, so we're going to make up one pair here.

如果键角仍然是109。,同样，我们还有4个未配对的电子可以用来成键，我们可以用其中的一个,和另外一个sp3杂化碳原子成键，这样我们可以组成一对。

麻省理工公开课 - 化学原理课程节选

For decades, ever since the mile was timed, no one broke the four minute barrier.

数十年来，自从开始一英里跑计时以来，没有人突破四分钟界限。

哈佛公开课 - 幸福课课程节选

Lewis structure for N2 is one, two, three, four, five.

氮有五个电子，一二三四五。

麻省理工公开课 - 固态化学导论课程节选