How do you know what to buy, though?

但是，你怎么知道该买哪份报纸呢？

youdao

How do you know what the problem is?

那么怎样才能知道问题出在那里呢？

youdao

So, how do you know what to ask and when?

所以，你怎么知道何时该如何向面试官提问呢？

youdao

what Matt would have done?" "How do you know "Now you're setting up a date with a vampire! What do you have, a death wish?"

VOA: special.2010.01.20

How do you know what foods are in calories?

我们如何知道食物有多少卡呢

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

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

耶鲁公开课 - 生物医学工程探索课程节选

So how do you know what people around you know?

FORBES: Magazine Article

How do you know what someone expects of you?

FORBES: Retailers: Who Do You Trust?

How do you know what you will inherit?

BBC: Miliband defends backing public sector pay freeze