动词短语
中文翻译：Unknown
同义词：
['sweeping', 'brush', 'sweep']
例句：
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1. The dog was brushing down the stairs with its tail.
狗用尾巴在楼梯上刷着。
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2. She brushed down her dress before going out.
她出去前把裙子刷干净了。
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3. The teacher brushed down the blackboard to clean it.
老师把黑板刷干净了。