This is most commonly done by placing leaf litter on a screen over a large funnel, often under some heat.

最常见的做法是把落叶放在一个大漏斗之上的筛子里，通常在一定的温度下进行。

youdao

Still, I’m writing this story leaning back in a chair, a screen over a yard from me, two arm lengths away.

不过，我在写这个文章时正靠在椅子上，屏幕距我一码远，大概两手的长度。

youdao

Still, I'm writing this story leaning back in a chair, a screen over a yard from me, two arm lengths away.

不过，我在写这个文章时正靠在椅子上，屏幕距我一码远，大概两手的长度。

youdao

The whole idea looks like a movie screen. It looks like a film playing out over the writer's head."

VOA: standard.2010.08.09

On the other side, sports bars may hesitate to flip the big screen over to a yoga final.

WSJ: Yoga in the Olympics? Jason Gay Weighs In

Servers got swamped and slowed to a crawl, and many gamers were stuck with a loading screen over and over again.

FORBES: The Diablo 3 Launch and The Perils of Online-Only

Its staff screen over 2.7m patients a year via clinics in remote areas, referring 285, 000 of them for surgery at its hospitals.

ECONOMIST: Health care in India