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1. The window cleaning apparatus isessential for maintaining clean windows.
窗户清洁设备对于保持窗户干净至关重要。
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2. Thecompany has developed a newwindow cleaning apparatus thatcan effectively remove dust and dirt fromthe glass surface.
该公司已经开发了一种新型的窗户清洁设备，可以有效地从玻璃表面去除灰尘和污垢。
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3. The windowcleaning apparatus is widely used inhomes and offices to keep the windows cleanand free of dust.
窗户清洁设备在家庭和办公室中广泛使用，用于保持窗户干净无灰尘。