For the first two, you may have no choice but to go with an av free presentation, so have a printed copy of your notes with you.

对于前两种情况，你只能用简易型音频或视频无线器来演示文稿，这时你需要一份打印稿。

youdao

I gave my presentation, went by the bookstore and spent a few minutes reviewing a copy of one of my books on DB2 application development, and went back and took the exam again.

我演讲之后去了书店，花了几分钟时间查阅了我的一本关于DB 2应用程序开发的图书，然后返回再考试了一次。

youdao

For the last two, carry a backup of your presentation on a USB flash drive or email yourself a copy, or better yet, do both.

对于后两种情况，使用移动硬盘上备用文档或从邮箱中调一份，或有更好的方法，都行。

youdao

One of her employees found out that a rival on-line pet company had a copy of Petopia's venture presentation.

FORBES: Dog fight

During a recent presentation, I told my audience that whoever scored higher than my score of 84 could receive a free copy of my book, The 2020 Workplace.

FORBES: Three Reasons You Need To Adopt A Millennial Mindset Regardless Of Your Age