And you don't just have to have and if or nothing construct.

你补补一定要建立if这样否则,不做其他事情这样的指令。

哈佛公开课 - 计算机科学课程节选

or if you're feeling like a big event has happened. Or if you're feeling that they look really great.

或者你觉得对方发生了什么大事，或者是你觉得他们看起来棒极了。

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Or if you want negative numbers, between negative 2 billion and positive 2 billion, but it's a finite range.

或者你想储存一个负数，就必须位于负20亿到,正20亿之间，是个有限的范围。

哈佛公开课 - 计算机科学课程节选

Deny thy father and refuse they name, or if thou wilt not, be but sworn, my love, and I'll no longer be a Capulet." She's a Capulet.

否认你的父亲，抛弃你的姓名吧，也许你不愿意这样做，只要你宣誓做我的爱人，我也不愿再姓凯普莱特了，她姓凯普莱特。

麻省理工公开课 - 固态化学导论课程节选

Yes, it's 7. So, I don't know if this is true or not, but I wonder if that's where the actual name 7-Up came from.

对，是七，我不知道这是不是真的，但是我怀疑这才是,七喜名字的真正来源。

麻省理工公开课 - 化学原理课程节选

And then, you start thinking, "Well, I could really start doing this if only X and if I had this person or if this technology existed or if this happened or this happened."

之后，你会开始思考，恩，只要某项条件成熟了，只要我认识这个人,或是如果这个技术存在,或是如果这个或那个发生了，我就能开始落实这个点子了“

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

This is also important though for Roman politics, because if you're if a freedman, - or even if you're a free person-- sometimes see freemen would connect themselves to a powerful Roman who was higher status than them, because they could use him for important things.

同时对罗马政治也很重要，因为即使是自由人，甚至是自由民-,有时候也会依附有权有势,地位高于他们的罗马人，以谋求他们的帮助。

耶鲁公开课 - 新约课程节选

If people want to take the chance or if people want to live big today and live a poor retirement, that should be their choice.

如果人们想要碰运气,或今朝有酒今朝醉,哪管退休喝凉水，那也是他们的选择。

耶鲁公开课 - 公正课程节选

In other words, if you look too closely at a picture or if you stand too far away from it you don't see it clearly it's out of focus but if you achieve just the right distance from it, it comes into focus.

换句话说，如果你站得离一幅图画太近,或太远都无法看清它,它在焦距之外,但是如果你站在合适的位置上，焦距就对准了，画就清晰了。

耶鲁公开课 - 文学理论导论课程节选

Now, the differences here may be subtle in terms of chemical composition or if you put these cells under a microscope and looked at their analysis.

干细胞与祖细胞化学成分的区别,还非常微小,除非你把细胞放在显微镜下,或者看细胞分析报告

耶鲁公开课 - 生物医学工程探索课程节选

The focus of pleasure shifts to the genitals and fixation can lead to excessive masculinity in females or in males, or, if you're female, need for attention or domination.

性器官成为了快乐的主要来源,固着在此阶段，会导致女性或男性,过分男性化，或是导致女性产生对于关注或控制的欲求。

耶鲁公开课 - 心理学导论课程节选

The reason why I do put them up is so that you have the opportunity if you want to see it again or if you have to miss a class.

我之所以把资料放在网上是为了,让你们可以重温或者学习错过的课程。

哈佛公开课 - 幸福课课程节选

We don't know how the change came about or if--some people question if they ever really did have kings, but the picture I want you to have is that's not the tradition.

我们不知道这个变化是怎么发生的,如果...有人质疑如果他们真的有过国王,不过这里我想告诉你们的是,他们没有这样的传统

耶鲁公开课 - 古希腊历史简介课程节选

Or if you want to be observing all the most beautiful sunsets and the most exotic locales, you've got exactly the experience you would have if you were doing all these things.

或者你想,欣赏最美丽的日落,去最奇异的地方，你获得一模一样的体验,仿佛真得在做那些事。

耶鲁公开课 - 死亡课程节选

This happens in every single episode, so much so that if any of you actually - I mean this might actually be true at Yale-- but if you any of you or the TV guys: if any of you know the guy who writes the plots for this, have him come to the class and get him see the video now and we get some better plot lines in there.

每集都有类似的剧情,如此以至于,我的意思是在耶鲁大学,如果你或者电台的人,要是你们想要写剧本,让他们来上这门课或者回家看视频,这很能启发他的灵感

耶鲁公开课 - 博弈论课程节选

Or if someone makes a mess in a, in a common area, they are expected to clean up that mess.

如果有人把公用区域弄脏了，那他就要负责打扫干净。

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