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youdao

Using visual aids, repeating key points and changing your volume to emphasize certain points are ways to use theatre to improve your communication.

你可以运用可见的帮助、重复关键点、调节音量等方法来强调某些重点，进而提高交际能力。

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In presentations using visual aids, she says, use no more than one slide a minute.

ECONOMIST: Damned lies and statistics

There's a chart behind me right here -- we're using visual aids today. (Laughter.) The bar on the left shows that six years ago, 60 percent of the oil we used was imported.

WHITEHOUSE: President Obama Speaks on American Energy