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| ADJ |
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| /ɪnˈfekʃəs/ |
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| 1 | an infectious disease is one that can spread from one person to another （疾病）传染性的 |
| The condition is highly infectious. 这种病传染性很强。 |
| | 1a | used about a person or animal that has an infectious disease （人或动物）带有传染病的 | | The animals were still infectious when they arrived. 这些动物到来时仍带有传染病。 | |
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| 2 | feelings or ways of behaving that are infectious make other people feel the same or behave in the same way （心情、行动）有感染力的，有影响力的 |
| an infectious laugh 有感染力的笑声 |
| His enthusiasm was infectious. 他的热情很有感染力。 |
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| DERIVED WORD |
| infectiously adv |
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| infectiousness noun U |
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