And, they can clean windows!

他们还能清洗窗户！

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EXAMPLE: A skillful janitor can clean windows perfectly with just a bucket of hot soapy water and a squeegee.

一个熟练的保洁员只需一桶热肥皂水和一把橡皮刷就能把窗户打扫得干干净净。

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The tiny airborne vessels will soon clean Windows on skyscrapers, verify insurance claims and spray pesticide on crops.

看似瘦小的无人机很快就可以给高楼擦玻璃；核实保险索赔，还可能给农作物施肥。

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Ten years ago, Dave Pugh was hired to clean windows at the home of Omaha philanthropists Sue and Walter Scott.

FORBES: Walter Scott, Jr.

Given my passion for clean windows, you might think that I'd regard Mr. Savadian and his product as saviors of a sort.

WSJ: Urban Gardner: The Joy of Clear Glass

On the surface, the show was about bigger, denser displays (4K), tablets of varying sizes, and oddball novelties like robots that clean windows.

FORBES: CES Summary: Evolution Of User-Centric Computing