They're playing air guitar.

这就是所谓的空气吉他。

youdao

I don't know how well you can make it out but there's a little broom guy there with glasses, playing air guitar with his broom, and I guess this is meant to capture the spirit of the contributors.

我不知道你们能理解到什么程度，但是在那儿有一个戴着眼镜的男孩，用他的扫帚在弹着吉他，我猜这个的寓意是指要抓住那些发起人的精神内涵。

youdao

Since he received the iPad, Owen has been trying to read books, and playing around with apps like Air Guitar.

自从收到iPad后，欧文一直在努力读书，玩一些应用程序，如空气吉等。

youdao

I don't know how well you can make it out but there's a little broom guy there with glasses, playing air guitar with his broom, and I guess this is meant to capture the spirit of the contributors.

我不知道你们能理解到什么程度,但是在那儿有一个戴着眼镜的男孩，用他的扫帚在弹着吉他，我猜这个的寓意是指要抓住那些发起人的精神内涵。

耶鲁公开课 - 现代诗歌课程节选

Bolt, who warmed up by playing air guitar while Zorba the Greek played over the public address system, was drawn in lane five.

BBC: Stunning Jeter run upstages Bolt

Wang Wanping, 21, a scrawny biscuit of a girl, plucks her heavy electric guitar in a moldy air-raid shelter, trying to find the right touch by repeatedly playing Joy Division songs.

CNN: ASIANOW - TIME Asia | Visions of China: Shanghai