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

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