Sources of infection
[医] 传染源
🧩 词语组成解析
n. 输入源；发起者；来源（source的复数）
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
infection
[in'fekʃən]
n. <医>传染，感染;传染病，染毒物;影响;
🗣️ 情景例句
Have you ever owned an animal?
你曾养过动物吗？
Put your pants on.
穿上你的裤子。
It is recounted of Thomas Carly1e that when he heard of the illness of his friend,
他听说朋友病了，