Now the question you'd need to ask yourself is how do you know this didn't happen to you last night?
现在你要问自己的问题是,你怎么知道,昨晚你没发生这样的事?
Do you know any policies that the U.S. government is using to fight global warming?
你知道一些美国政府应对全球变暖的政策吗?
How do you know something like this doesn't happen every single night, every hour on the hour, ? every minute, every second?
你怎么知道这样的事,每一晚,每个小时,每分每秒都没有发生?
How do you know whether it's in Cartesian form or in polar form?
这没什么了不起的,但是现在出现问题了?
The question becomes how did you address these issues How do you know about them.
这样一来问题就变成了你怎么处理这些问题,以及你对它们了解多少。
Can you tell me, how do you know how long a meter is?
你能告诉我,你怎么知道一米有多长吗
At least Russia and China do you know anything about their history?
至少应该有俄罗斯和中国,你们了解这两国的历史吗
Do you know what I mean? Can you...?
你们懂我的意思吗?
Now, what do you know about energy?
现在,你对能量了解多少?
Do you know how the museum has collected treasures from all around the world?
你知道这个博物馆是如何从世界各地收集宝藏的吗?
Okay. That is Beethoven, Ludwig van Beethoven, and do you know the name of the piece?
好的,就是贝多芬,路德维希·凡·贝多芬,那么你知道这首曲子的名字吗
So what do you know?
那么你知道什么?
How do you know what foods are in calories?
我们如何知道食物有多少卡呢
Before, we talked about how do you know what messenger RNA to make, how do you know what RNA to copy from a DNA template?
在之前的课上,我们说到如何判断mRNA的具体序列,如何判断RNA从DNA模板复制了什么
But do you know other attractions that visitors might not be familiar with?
但你知不知道哪些游人们一般不太熟悉的景点呢?
I can see the buildings around here are new. Do you know why?
我发现这里所有大厦都是新的。你知道为什么吗?
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