She was apt to raise her voice and wave her hands about.

她常常提高嗓门并挥舞双手。

《柯林斯英汉双解大词典》

Which might explain why we wave our hands, exhaustively, when trying to be understood in countries where we don't speak the language.

这或许能解释，当我们在异国他乡的时候，为了让别人理解我们，为什么我们会拼命舞动我们的手。

youdao

So for now wave goodbye, leave your hands held high, hear this song of courage long into the night.

高举双手向过去告别，聆听这称颂勇气的歌声，沉入黑夜，等待黎明。

youdao

To log into the system, players just wave their hands in front of the screen.

CNN: Microsoft Kinect to hit stores November 4

And then you sort of wave your hands at exactly what was said in the rest of both of my posts.

FORBES: The Fallacy of 'The Seven Habits of Spectacularly Unsuccessful Executives'

The traits that cause your friends to hoist you on their shoulders and run around a field chanting your name while you wave your hands in the air, making funny faces, can become your undoing in the markets.

FORBES: Investors Beware: The Market Will Inflict More Pain