动词短语
中文翻译：擦
同义词：
['scrape', 'polish', 'smoothen例句：1. The car was so dirty that we had to rub it down with a rag.（这辆车太脏了，我们不得不用抹布把它擦干净。）']
例句：
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1. The car was so dirty that we had to rub it down with a rag.
这辆车太脏了，我们不得不用抹布把它擦干净。
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2.The old wooden chair needed some rubbing down before it could be used again.
这个旧木椅需要打磨一下才能再次使用。
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3.The floor needs to be rubbed down before the new carpet is installed.
在安装新地毯之前，地板需要先打磨一下。