down sweep

基本解释

Inside the shaft these probes move up and down and sweep round 360 degrees on a specially designed track held between two centralising spider assemblies.
内部的探头架设在两个多支腿结构上，它们可以上下移动，并能完成360度旋转。
This society emphasizes too much harmony, so the way they do that is by heavy-handed control — they try to put everything down and sweep it under the rug without solving problems.
这个社会过分强调和谐，而他们的方法是通过严厉的控制 - 他们试图把一切都压下来，把问题藏在地毯下面而不是解决问题。
THE parade of film stars that will sweep down the red carpet of the Kodak Theatre to the Oscar ceremony on Sunday February 24th may be winners already.
能走上2月24日柯达剧院前的红毯的奥斯卡明星们也许已经算是成功者了。

What of it, if some old hunks of a sea-captain orders me to get a broom and sweep down the decks?
NPR: Excerpt: 'Moby-Dick'
Each time a man stands for an ideal, or acts to improve the lot of others, or strikes out against injustice, he sends forth a tiny ripple of hope, and crossing each other from a million different centers of energy and daring, those ripples build a current that can sweep down the mightiest of walls of oppression and resistance.
FORBES: When It Comes To Fixing The Economy, Obama And Romney Should Be Talking About This Tonight