📖 a thing that is a slightly different form or type of sth else

➡️ vary (v.) （大小或形狀）相異，不同；隨…而改變

🧬mutate (v.) 變異；突變

#️⃣ 拉丁字 variantem 是*variare *的現在分詞形式，後來延伸為名詞使用。

===== 同字根延伸單字有：=====

🧬 variation (n.)變化；變異

🧬 mutation (n.)突變

🧬 genetic mutation (n.) 基因突變

🧬 strain (n.)（疾病）類型

🧬 emerge (v.) 出現；浮現

🧬 Alpha variant 源自於英國 U.K.

🧬 Beta variant 源自於南非 South Africa

🧬 Gamma variant 源自於巴西 Brazil

🧬 Delta variant 源自於印度 India

===== 本集的必備例句 =====

The COVID-19 pandemic is increasingly becoming an arms race among the emerging variants of the virus, and at the moment, there’s no question which one is winning: the Delta variant—formally known as B.1.617.2—one of four strains to have emerged originally in India. – TIME, 15 June, 2021

（COVID-19 疫情正日益成為新型變種病毒間的軍備競賽，目前，哪一種正在獲勝毫無疑問是：Delta 變種—正式名稱為 B.1.617.2—最早出現在印度的四種病毒之一。）

📈多讀一點點：https://time.com/6073345/delta-variant-covid-19/

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