One should never criticize if one is not sure of one's facts.
一个人如果对自己掌握的事实没有把握，就绝不该随便批评。
If one firm goes under it could provoke a cascade of bankruptcies.
如果一家公司倒闭，可能会引起一连串的破产。
If one bank raises interest rates, all the others will follow their lead.
要是有一家银行提高利率，所有其他银行都会效法。
If one looks at the bigger picture, a lot of positive things are happening.
如果人们从更宏观的角度看，许多积极的事情正在发生。
There is something rather strange about all this if one stops to consider it.
如果停下来考虑一下，就会发觉这一切相当蹊跷。
The timetable for trains is so tight that if one is a bit late, the domino effect is enormous.
列车时刻表安排得很紧凑，所以，如果一列火车晚点一会儿，就会引起巨大的多米诺效应。
If one then marks down one's thoughts, poetry is produced.
如果一个人写下自己的想法，那么，诗歌就产生了。
This could be the next flashpoint—if one does not erupt earlier.
这将成为下一个暴力爆发点——如果没有地点更早爆发的话。
But now what if one ingredient to this planning recipe is missing?
但是现在，如果这个计划的配方中少了一种原料呢？
If one of your friends breaks his promise to you, will you be angry?
如果你的一个朋友违背了他对你的诺言，你会生气吗？
If one of your friends is having a bad day, you can hug them to cheer them up.
如果你的一个朋友心情不好，你可以拥抱他们让他们开心起来。
If one child bought a sugar figure, many other children would crowd around and admire it.
如果一个孩子买了一个糖人，许多其他的孩子会围在一起欣赏它。
It actually seems that multiple presentation formats, especially if one of them is visual.
似乎有多种展示形式，其中有一种是可视的。
If one experience doesn't work, don't give up and you'll surely find the right opportunity.
如果一次经历不成功，不要放弃，你一定会找到合适的机会。
If one believes in himself, all he needs is just a little bit of luck to fulfill all his dreams.
只要一个人相信自己，他就只需要一点点运气，所有的梦想就都有可能实现。
If one of the sounds is simply omitted during the second clip, then most people notice the difference.
如果在第二个片段中某一个声音被省略，那么大部分人都能注意到这不同。
Instead, most people seem to learn better if they're taught in several ways, especially if one is visual.
相反，在用几种方式教导的情况下，大多数人似乎能更好地学习，特别是如果其中一种方式是通过视觉教导的话。
Likewise, if one cannot deal with the things in hand, he or she must fail in the following knotty problems.
同样，如果一个人不能处理手头的事情，他或她一定不能解决后续棘手的难题。
My theory is that if one is doing it, all do it until the first one has the courage to break off—it's peer pressure.
我的理论是，如果有人开始做这类节目，其他人也都会做下去，直到第一个人有勇气挣脱为止——这是同行压力。
If one chord holds twice as long or only half as long, then we have an irregular harmonic change--irregular rate of harmonic change.
如果某一个和弦持续的时间是两倍或者只有一半，那我们就有了不规则的和声改变——和声改变的不规则比率。
Like during a fake fight, a play fight, if one of the animals is winning, the winning animal might just stop and give up its advantage.
就像在一场假格斗，一场游戏格斗中，如果其中一只动物快赢了，它可能就会停下来，放弃它的优势。
If the virus had been capable of spreading through the air, or if one infected person had unknowingly entered a large population center, Ebola might have become a worldwide epidemic.
如果这种病毒能够通过空气传播，或者如果一名感染者在不知情的情况下进入了人口密集的地区，那么埃博拉可能已经成为一种全球流行病。
We can use him as a backup if one of the other players drops out.
如果有参赛者退出，我们可以用他作为替补。
For the same reason, music can be very beneficial if one is in pain.
出于同样的原因，如果一个人在经历痛苦，音乐则可能是非常有益的。
If one person manages to create a dish, the other person will write the process and take photos.
如果一个人成功地做出了一道菜，另一个人则负责记录过程并拍照。
As cool as it may be to receive a postcard written in Chinese, the concept doesn't work if one doesn't understand it.
尽管收到用中文写的明信片可能很酷，但如果收到的人不理解它，这个概念就不起作用。
If one of your friends sends you a message to borrow money on the Internet, you'd better phone him directly first to make sure of that.
如果你的一个朋友在网上给你发信息借钱，你最好先直接给他打电话确认一下。
It seemed to him just as if one turned over a leaf in a book.
在他看来，这就像翻了一页书一样。
She wondered a little what this girl would do if one slapped her in the face.
她也好奇这个姑娘被打了耳光之后会有什么反应。
With nine engines on the first stage, Falcon 9 can reach orbit even if one or more fails.
猎鹰9号的第一级有9个引擎，即使一个或多个引擎故障，它仍然可以到达预定轨道。
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