如果论点有效，结论为假，那么我们知道至少有一个前提肯定为假。
So if an argument is valid and the conclusion is false then we know that at least one of the premises must be false.
如果最近和家人频频闹意见，心情上下起伏很大，很没安全感，那么我们知道，现在的运势上会有较大的问题出现了。
If the family has been trouble, the mood fluctuation is very big, very insecure, as we know, there will be a larger problem now fortune.
那么，我们知道某些大陆目前是如何移动的。
那么我们如何知道哪些光谱模式与哪些元素相匹配呢？
So how do we know which spectral patterns match up with which elements?
那么，我们的胆怯感会导致我们犹豫，行动迟缓，直到我们知道情况安全了才迈步。
Then our sense of timidity can cause us to hesitate, to move slowly, and not to take a step until we know the ground is safe.
如果我们知道一个老顾客会给不少小费，那么我们就要确保他得到良好的服务。
If we know a regular customer is a good tipper, then we make sure he gets good service.
这很令人兴奋，但如果你认为，你什么知道，你不需要学习了，那么你不再属于我们。
It's very exciting, but if you think you know everything you don't need to learn, you don't belong to us. I always need to learn.
如果我们对自己的记忆更有信心并且知道如何正确使用它们，那么我们会记住更多的东西。
We would remember a lot more if we had more confidence in our memories and knew how to use them properly.
我知道我们是两个不那么陌生的陌生人。
那么我们究竟知道多少？
那么，我们能知道些什么呢？
那么，我们如何知道文本应该偏移多少，应该放置在距离顶部多远的位置？
So how did we know how much to offset the text or how far down from the top to place it?
那么，我们如何知道何时需要防止引起反感而何时则不必担心？
那么，你知道，要生产动物作为食物，我们首先要生产很多粮食然后收割这些粮食。
Well, you know, to raise animals for food, we first raise alot of grain and then harvest the grain.
那么，我们能否知道一个事务发生在哪个应用程序成员上？
Then can we get to know which transaction happen on which application member?
那么，我们怎么知道别人真实的感觉？
如果书中不尊重这荒谬，那么我们应该知道幻念作为权宜之计溜了进来。
If the absurd is not respected in it, we shall know by what expedient illusion enters in.
那么，我们怎么知道一个DB2代理的地址空间是多大呢？
Well then, how do we know how big a DB2 agent's address space is?
如果真是这样，那么我们所知道的那个满是恒星，没准儿还满是生命的宇宙也将只是一个寒冷，黑暗的无尽虚空世界中的短短一瞬。
If so, the cosmos as we know it-full of stars and, maybe, full of life-will be a fleeting moment in an endless duration of cold, dark nothingness.
等我们知道了不那么做的后果时，已经为时已晚。
We won't know the consequences of not doing that until it's way too late.
那么现在，我们知道更多的相关信息，再看看吧。
Well now that we know a little more information about it, lets look again.
那么知道我们的年收入总额又有何结果呢？
And what are the consequences of knowing our gross yearly income and not much else?
我确定你对努力工作有很多的观点(不论你是为之而奋斗还是试图避免)，那么让我们知道你的观点和想法吧。
I'm sure you've got plenty of views on working hard (whether you strive for it or try to avoid it!) - so let us know your thoughts in the comments...
既然我们知道了攻击的基本知识，那么做些什么才能保护我们自己避免这一脆弱性呢？
Now that we know the basis of an attack, what can we do to protect ourselves from this vulnerability?
现在我们知道面对的问题是什么，那么我们应当如何向前推进？
Now that we know what we are up against, how do we move forward?
但是深入地想一想，我们知道我们被造不只是那么多。
But deep down inside we know we were made for more than that.
那么，我们怎么知道别人真实的感觉？要想知道的话，你有几个选择。
So, how do we know what the other person is truly feeling? You have several options for getting this information.
我们知道，记忆常常在睡眠时被加深，那么，我们的问题是：睡眠对错误记忆有何影响？
We know that memories are often consolidated in sleep, so the question arises: how does sleep affect false memories?
我们知道，记忆常常在睡眠时被加深，那么，我们的问题是：睡眠对错误记忆有何影响？
We know that memories are often consolidated in sleep, so the question arises: how does sleep affect false memories?
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