Put up a copy of your study guide at home so you and your family can see it, and email a copy to your friends so they know when you have spare time.

在家里放一份学习指南，这样你和你的家人就可以看到它，并通过电子邮件发一份给你的朋友，这样他们就知道你什么时候有空闲时间。

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"And the audience lets you know in real time exactly how they feel about your performance.

VOA: standard.2010.07.01

Know what you've already tried, don't waste your time trying it again.

记住你已经尝试过的错误，不要再次浪费你的时间。

麻省理工公开课 - 计算机科学及编程导论课程节选

In order to attend, you must know the date and the time. You can ask your friend, "When is your wedding?"

为了能够出席，你必须知道具体的日期和时间，你可以问你的朋友，“When is your wedding？”

When 课堂 - SpeakingMax英语口语达人

Know your time frame and risk tolerance.

FORBES: Is That All There Is To A Stock Market Correction?

Know your time frame and preserve capital!

FORBES: Can G7 Call Provide Hope for Market?

You know, spending your time doing things like "Sesame Street" ensures that some people in the audiences will know who you are.

NPR: Judy Collins, From Both Sides Now