名词
中文翻译：回冲
同义词：
['reflux agent', 'backwash']
例句：
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1.The patient was given a backscour to help relieve his stomach pains.
病人被给予一种回冲剂来帮助缓解他的胃痛。
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2. The backscour was effective in preventing the spread of bacteria.
这种回冲剂在预防细菌传播方面是有效的。
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3.The backscour was administered after the surgery to prevent any potential complications.
手术后，使用了回冲剂以防止任何潜在的并发症。