How do we know when to invest in an upgrade?
我们如何知道何时投资升级？
How do we know that Hollywood likes Jackie Chan?
我们怎样知道好莱坞喜欢成龙？
So how do we know which spectral patterns match up with which elements?
那么我们如何知道哪些光谱模式与哪些元素相匹配呢？
How do we know that the Earth is a smaller ball turning around one of those stars, the Sun?
我们怎么知道地球是一个更小的球，绕着其中一颗恒星——太阳转呢？
How do we know, for example, that the stars are really huge balls of fire like the Sun and very far away?
比如说，我们怎么知道恒星真的是像太阳一样巨大的火球，而且离我们很远呢？
How do we know that Adam and Eve weren't Chinese?
你知道为什么亚当和夏娃不是中国人么？
How do we know that you're not constructing a WMD?
我们怎么知道你造的不是大规模杀伤性武器？
How do we know that mag will reduce titanium tetrachloride?
我们如何知道，镁会还原四氯化钛？
The question should be how do we know if it is a maximum or a minimum?
现在的问题是我们怎么知道这就是一个极值点？
But with little or no coaching, how do we know we are on the right track?
可是，如果只有些许训练甚至没有，我们又怎么能知道在爱的旅途中我们是否正确呢？
Love is something we all need, but how do we know when we've experienced it?
爱是我们都需要的东西，但是我们怎么知道什么时候经历了爱？
How do we know this always stops? I mean, I ran three trials here, and it did.
我指的是我在这儿试了三次，它都停了，那这是为什么呢？
So, how do we know, if we've got this play, whose position is Plato's position?
那么，我们如何辨别，在戏剧中，谁代表柏拉图本人的立场呢？
How do we know which of the needed capabilities we have now, and in what degree?
我们如何知道现在拥有哪个所需的能力，并且到什么程度？
And How do we know that each stage is truly completed before moving to the next?
以及我们怎么知道，在到达下一个阶段之前，该阶段真正完成了？
As teams adopt new ways of working, they ask questions: how do we know how agile we are?
当团队采用新的工作方式时，他们会问问题：我们如何知道我们有多敏捷？
And how do we know that there's no room for policies to put the unemployed back to work?
我们怎么知道不存在让失业者重新回到工作岗位的政策余地？
And how do we know who a virtuous person is? We just look for someone who's flourishing.
我们如何知道一个人是不是有道德的人？我们只需要找那些富足的人。
If a and B did different computations, how do we know they ended up with the same value?
A和B的计算方法不同，为什么能够得到同样的值？
Since what we want to know is whether the soul is immortal, how do we know it can't break.
既然我们想知道，灵魂是否不朽，我们怎么知道它会不会破裂呢。
How do we know that the creation of worlds is not determined by the fall of grains of sand?
我们又怎能知道星球不是由砂粒的陨坠所形成的呢？
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？
How do we know what skills they will need, what knowledge will be important, in 10 years, or 15?
我们怎么知道他们需要什么，在未来10年、15年里，什么知识会很重要？
How do we know that you're designing and constructing the right kind of application in the first place?
首先我们如何知道你们正在设计和构建的应用程序的类型是合适的？
Animal a: Why not call it the Big Chill or the Nippy era? I'm just saying-how do we know it's an ice age?
动物甲：为什么不叫大寒时代或干脆叫冷冰冰时代？我的的意思是，我们怎么知道这就是冰河时期？
RAZ: How do we know whether a human being would come out of this fully intact or without any brain damage?
拉兹：我们怎么知道病人是否会走出手术室而没有任何脑损伤哪？
RAZ: How do we know whether a human being would come out of this fully intact or without any brain damage?
拉兹：我们怎么知道病人是否会走出手术室而没有任何脑损伤哪？
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