动词短语
中文翻译：内部清洁
同义词：
['clean internally', 'clean up inside']
例句：
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1. The factory needs to be thoroughly cleaned internally before the next shift starts.
在下一班开始之前，工厂需要彻底清理内部。
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2. After the storm, we had to clean up the house internally to prevent mold growth.
暴风雨过后，我们不得不清理房子内部以防止霉菌生长。
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3. The company decided to clean up its internal operations to improve efficiency.
公司决定清理内部运营以提高效率。