Sometimes you see this written when you see p orbitals, one is written as plus, one is written in minus.

有时候你们看ｐ轨道时会看到，一个写成正号一个写成负号。

麻省理工公开课 - 化学原理课程节选

And you know, sometimes you run into people that you haven't seen in a while, so it's nice.

你知道，有时候你碰上一些好久不见的人，这很好。

有趣的宿舍生活 - SpeakingMax英语口语达人

OK PROFESSOR: Valence electrons. OK, sometimes you're going to be asked to draw a molecular orbital diagram where you're asked to include all electrons, and sometimes it will specifically say only include valence electrons.

教授：价电子，有时候你画一幅分子轨道图,有时候要求你画出所有的电子，有时候特别要求,只包括价电子。

麻省理工公开课 - 化学原理课程节选

Sometimes you may be listening to a lecture and then half way through it there is an emergency.

有时候讲座过程中，突然有紧急情况。

哈佛公开课 - 幸福课课程节选

So sometimes you'd see they'd make statues of Isis look like statues of Artemis back home.

有时候看到他们在建艾西斯的神像,很像故乡阿尔忒弥斯的神像。

耶鲁公开课 - 新约课程节选

Sometimes you see it in Nashville playing with country music, that kind of thing.

你有时能见它在纳什维尔演奏乡村音乐,诸如此类

耶鲁公开课 - 聆听音乐课程节选

If we want to know the total heat added to the system, we can measure it, which is the straightforward thing, but sometimes you want to calculate in advance, or sometimes you want to calculate it on an exam.

如果想知道给系统的总热量，我们可以测量，这是很直接的事情，但有时候我们想事先计算它，或者需要在考试中计算。

麻省理工公开课 - 热力学与动力学课程节选

If you go to the web just type in glycemic index, you can pull up chart after chart of high and low glycemic index foods, and sometimes you get surprised by what those foods are.

如果你在网上输入血糖指数,你会得到一个又一个,关于食物血糖指数高低的图表,有时你会被列表中的那些食物吓一跳

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And similar is a leader, sometimes you don' t have all the information that you want, you've gotta be willing to say " i am gonna go with the best information that i have" i am gonna make the best decision that i can and if we were wrong, we admit it, and we fix it, but we won't just stand there.

同样，作为一名领导者，有时你无法取得,所有的相关信息，你要愿意主动地说,“我将最大可能地,利用手上的资料来工作”,“我要做出自己能够做出的最好的决定”,如果我们犯了错，就虚心承认而且设法改正，但我们不会袖手旁观。

普林斯顿公开课 - 领导能力简介课程节选

And although you enjoy it, sometimes you also enjoy reminiscing about the old days when you were young.

你非常享受这种生活，但有时，你也会回忆起你们年轻时的岁月。

Do you ever课堂 - SpeakingMax英语口语达人

So sometimes you can have a team like Manchester United can play against a team

所以，有时你可以看到像曼联队这样的球队会对阵一个球队，

关于足球联赛 - SpeakingMax英语口语达人

Sometimes you can design drugs that act like a natural ligand without being the natural ligand.

有时你能设计具有天然配体功能的药物,但它不一定和天然配体相同

耶鲁公开课 - 生物医学工程探索课程节选

Well, sometimes you divide up the land equally, but if that land continues to get smaller and smaller, it will not sustain an additional person, not to mention additional family.

一种做法是,平分耕地,但是如果人口越来越多呢,那平分的田地就不够一人所需,更不必说整个家庭了

耶鲁公开课 - 古希腊历史简介课程节选

Meaning, sometimes you need to do this, but in general there's at least in my view and I don't, John you just don't want to do this.

意思也就是，有的时候你不得不这么做，但是通常来说,至少我认为不该这么做，你同意这么做么？--，John，，would，you，agree？—,你不该这么做。

麻省理工公开课 - 计算机科学及编程导论课程节选

Sometimes you're helping out with aid and that kind of thing, you know.

有时候你去救援，做这类的事情。

英国的军人 - SpeakingMax英语口语达人

And homework, it varies between classes. Sometimes you only get one assignment,

家庭作业，也跟课程的不同而有所差异。
有时候你只有一个作业，

很好奇住宿生活 - SpeakingMax英语口语达人