On November 12, while two men were busy cleaning windows, a rope of the platform broke near the 68th floor.

11月12日，当两名男子忙于清洗窗户时，68层附近的一根平台绳索断裂。

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I immediately regretted answering in the way I did, but I said, 'I enjoy cleaning windows at night.

我回答了他的话，但马上又后悔不该那样说，我是这样说的：“我喜欢在夜里擦窗子。”

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Thee times for pasting window paper are gone. Nowadays, the tradition is replaced by cleaning Windows.

纸糊窗户的时代已经过去，所以如今这习俗已经被擦玻璃取代。

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Indeed, one could spend the whole day cleaning windows, a temptation I resist.

WSJ: Urban Gardner: The Joy of Clear Glass

Jason Lewis was 26, broke and cleaning windows when he and a college friend decided to embark on an adventure around the world using only human power, one of the last great firsts to conquer.

BBC: Jason Lewis: Circumnavigating the world

Some of the earliest applications of nanomaterials have been in products such as stain-resistant fabrics, self-cleaning windows and harder-wearing tennis balls, but more and more are turning up in cosmetics and skin lotions such as sun-blockers.

ECONOMIST: The dulling of nanotech��s silver lining