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N-COUNT
（大樓的）保潔員，清潔工
A cleaner is someone who is employed to clean the rooms and furniture inside a building.
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N-COUNT
(專業的)清潔工
A cleaner is someone whose job is to clean a particular type of thing.
例句
He was a window cleaner.
他是個洗窗工。
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N-MASS
清洗劑;去污劑
A cleaner is a substance used for cleaning things.
例句
...oven cleaner.
烤箱清潔劑
...abrasive cleaners.
擦洗劑
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N-COUNT
清潔器;吸塵器
A cleaner is a device used for cleaning things.
例句
...an air cleaner.
空氣凈化器
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N-COUNT
干洗店
A cleaner or a cleaner's is a shop where things such as clothes are dry-cleaned.
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PHRASE
騙走，騙光(錢財)
If someone takes you to the cleaners, they unfairly take most of your money, for example in a business deal or in gambling.