How will you know when you have arrived?

您如何知道已经到了目的地？

youdao

How will you know when you've succeeded?

如果怎么知道你是成功了？

youdao

How will you know when you're successful?

你如何知道你什么时候成功的？

youdao

For example, if you're talking about the chalk--if I throw the chalk, you will have to know where it is and how fast it's moving.

比如说,这支粉笔,如果我扔出这支粉笔,你就像知道它的位置和速度

耶鲁公开课 - 基础物理课程节选

and they get to know you and maybe assess how good you will be in the lab, so I think,

了解你，评估你在实验室里怎么样，所以我觉得，

要考入大学 - SpeakingMax英语口语达人

I circled this P -if any of you have taken statistics will know what that means, but it's the statistical term that tells you how significant these findings are.

我重点圈起了P,学过统计学的就知道这是什么意思,这是统计学的术语,它告诉我们,这些数据的重要程度

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

How will you know when you've crossed the line and allowed ambition to go too far?

NPR: Before Midterms, a Chat with Sen. Barack Obama

How will you know if you want a feeding tube, tracheostomy, or other medical intervention?

FORBES: Do Conversations Around End Of Life Really Matter?

After all, how will you know whether it's safe to cross the road, if you can't look the driver in the eye?

BBC: What if a robot drove your car?