名词
中文翻译：传染
同义词：
['infection', 'infection', 'contagiousness']
例句：
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1.The disease is contagious and can spread easily.
这种疾病传染性强，容易传播。
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2. The doctor advised everyone to wash their hands before eating.
医生建议每个人在吃饭前洗手。
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3.Contagion is a serious threat to public health.
传染病对公共卫生构成严重威胁。