1. 傳染的;傳染性的 A disease that is infectious can be caught by being near a person who has it.
e.g. ...infectious diseases such as measles... 類(lèi)似麻疹這樣的傳染病 e.g. These viruses affect children and are highly infectious. 這些病毒會(huì )侵襲兒童，而且具有很強的傳染性。
2. 有感染力的;易傳播的 If a feeling is infectious, it spreads to other people.
e.g. She radiates an infectious enthusiasm for everything she does... 她做任何事情都充滿(mǎn)一種極富感染力的熱情。 e.g. There was a peal of laughter down the phone, which Harry found infectious. 電話(huà)里傳來(lái)一陣響亮的笑聲,哈里也不禁受其感染。