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Streptococcus is a kind of bacteria — a very small living thing that can make you ill. It is best known for throat infections; when a doctor says a child has 'strep throat', this is the bacteria they mean. The same family can also cause skin infections, scarlet fever, and some more serious illnesses.
Streptococcus鏈球菌 is a kind of bacteria是一種細菌 a very small living thing that can make you ill一種很小、會讓你生病的生物 It is best known for throat infections它最有名的是造成喉嚨感染 when a doctor says a child has "strep throat,"當醫生說小孩得了「strep throat」（鏈球菌喉炎） this is the bacteria they mean指的就是這種細菌 The same family can also cause skin infections, scarlet fever, and some more serious illnesses同一個家族還可能造成皮膚感染、猩紅熱和一些更嚴重的疾病
It is a technical, medical word: doctors and nurses use it, and you see it on test results and in news reports about outbreaks. In ordinary speech almost nobody says the whole word — English speakers it to 'strep' ('a strep test', 'she has strep').
It is a technical, medical word這是個專業的醫學用字 doctors and nurses use it醫生和護理師會用它 and you see it on test results and in news reports about outbreaks你也會在檢驗報告和疫情新聞報導裡看到它 In ordinary speech在日常口語中 almost nobody says the whole word幾乎沒有人會說整個字 English speakers shorten it to "strep"英語使用者會把它簡稱為「strep」 ("a strep test", "she has strep")「a strep test（鏈球菌檢驗）」、「she has strep（她得了鏈球菌感染）」
The plural is streptococci, and the adjective is streptococcal, which you will see in phrases like 'streptococcal infection'. Note that these bacteria, unlike a virus such as flu, can be killed by antibiotics, which is why a doctor gives medicine for strep throat but tells you to just rest with a cold.
The plural is streptococci複數是「streptococci」 and the adjective is streptococcal形容詞是「streptococcal」 which you will see in phrases like "streptococcal infection."你會在像「streptococcal infection（鏈球菌感染）」這樣的詞組裡看到 Note that these bacteria值得注意的是這種細菌 unlike a virus such as flu不像流感這種病毒 can be killed by antibiotics可以被抗生素殺死 which is why a doctor gives medicine for strep throat這就是為什麼醫生會開藥治療strep throat but tells you to just rest with a cold但感冒卻只叫你多休息
組成strepto-（希臘文「扭轉、鏈狀」）+ -coccus（希臘文「球狀顆粒」）。這種細菌在顯微鏡下一顆一顆連成一串，像一條鏈子，所以叫「鏈狀的球菌」——中文譯名「鏈球菌」正好把這個畫面翻出來了。
同家族的字
- staphylococcussame -coccus 'round grain'; staphylo- means 'bunch of grapes', so those bacteria cluster instead of forming chains
原始詞典資料1 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
streptococcusnoun/ˌstɹɛptəˈkɒkəs/
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A spherical, gram-positive bacterium of the genus Streptococcus. Although commonly found benignly in the human mouth and gut, and though many species are non-pathogenic, other species can cause diseases including strep throat and more serious conditions.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。