We know the constitution of mineral through chemical analysis.
我们通过化学分析知道矿物的构成。
We know the promise is there—this is a well-grounded, talented, warm-hearted group of youngsters.
我们知道希望就在那里——这是一群基础扎实、才华横溢、热心的年轻人。
We know the difference between voluntary and involuntary part-time employment because people tell us.
我们从人们口中知道了自愿与非自愿兼职之间的区别。
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.
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。
It's a question rather of how we know the author to be there firstly, and secondly, whether or not we should appeal to the authority of an author.
首先我们如何知道作者在那儿，其次，我们是否应该诉诸作者的权威。
From the story we know the owner of the hotel wanted to steal the old man's bag when he slept.
从这个故事中我们了解到旅馆的主人想趁老人睡觉的时候偷他的包。
In the first experiment of buttered toast, we know the toast landed butter side down about 620 times.
在第一个奶油吐司的实验中，我们知道，奶油的那一面会掉下来大约620次。
We know the dynamics of outsourcing.
我们了解外包的动力。
And if we know the lattice vibrational frequency.
如果我们再知道晶格振动频率。
We know the future will be forged by deeds and not simply words.
我们知道，开创未来不能仅凭言词，还要有行动。
In short: We know the ins and outs of the code, and why it's working as it is.
总而言之：我们了解了代码的输入和输出，以及他们为什么这么工作。
We know the importance of a candidate's charisma in these days of campaigning.
我们知道，候选人的魅力在当今竞选中十分重要。
We know the challenges.We've heard them.We've talked about them for years.
我们已听说并知晓挑战所在，而且我们多年来一直在谈论这些挑战。
And so we know the force for a particular mass, and we know the area of the piston.
我们知道每个质量对应的力，也知道活塞的面积。
So we get at the number of neutrons indirectly because we know the proton number here.
所以，我们可以间接得到中子数，因为我们知道质子数了。
Today his land is a pile of jagged volcanic rocks. "We know the mountain will erupt again.
直到今天，他管理的这片城区上还是堆满了犬牙交错的火山岩石。
We know the Tuesday build contains only the test cases that are expected to pass at that point.
我们知道星期二的构建只包含预计在此通过的测试用例。
That is, for a track we know the identity of its album, performing artist and associated genres.
也就是，比如乐曲，我们知道它的特征有所属专辑，表演者和相关流派。
OK, so now the question is, how do we know the first place that this is a suitable reductant?
好的，现在的问题是，我们如何能知道第一步中,镁是一个合适的还原剂？
And, for some of them, by the time we know the answers to their questions, it will be too late.
而且，对其中一些行业，当他们(行业)的问题得出答案时，已经太晚了。
In a nutshell, the method tells us what kind of variable we are dealing with, once we know the name.
简单来说，如果我们知道变量名，该方法就可以告诉我们正在处理什么类型的变量。
Now that we know the basis of an attack, what can we do to protect ourselves from this vulnerability?
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？
"We know the cause of this crisis," says Bestman Nnwoka, who co-ordinates the amnesty in Rivers state.
河州停火特赦协议的调解人百斯特门纳沃卡说，“我们知道危机产生的原因。”
We know the consequences of malnutrition, also in terms of higher mortality from childhood infections.
我们知道营养不良的后果，也知道儿童期感染导致较高死亡率的后果。
The second one, well, we know the approximation formula already, so I don't need to justify it for you.
第二个，先前已经知道了和这个差不多的公式，所以也不需要给你们证明了。
"Now we know the difference of behavior," she says. "we need to go deeper into why this is happening."
现在我们知道了行为差异性，接下来就是要探究差异产生的深层原因了。
We know the equations so well from our last lecture from one-dimensional motion with constant acceleration.
上一课的方程我们，已经比较熟了，常数加速度的，一维运动方程。
But this our containment of the visible universe. We know the universe is bigger than that which we can see.
但这是我们可见的宇宙的天穹，我们知道整个宇宙是比我们所能看到的大得多。
But this our containment of the visible universe. We know the universe is bigger than that which we can see.
但这是我们可见的宇宙的天穹，我们知道整个宇宙是比我们所能看到的大得多。
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