名词
中文翻译：回流
同义词：
['backflow', 'leakage例句：1. The back-leak of the old system was causing problems for the new one.（旧系统的回流问题给新系统带来了麻烦。）']
例句：
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1. The back-leak of the old system was causing problems for the new one.
旧系统的回流问题给新系统带来了麻烦。
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2. The leakage of oil caused a big fire in the factory.
油的泄漏在工厂里引起了大火。
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3.The company's back-leak of confidential information is illegal.
公司泄露机密信息是非法的。