形容词
中文翻译：传染的
同义词：
['infectious', 'infectious disease']
例句：
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1.The virus is contagious and can spread quickly.
这种病毒是传染性的，传播速度很快。
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2.He caught a cold from his friend, which made him contagious.
他从朋友那里感染了感冒，变得容易传染。
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3.Contagious diseases are a major public health concern.
传染病是公共卫生的一大关注点。