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Covid-19
SARS-CoV-2is following the evolutionary rule book
段落精講請掃下方圖片二維碼查看+全文PDF加小編VX: elitezhich。Even three meaningful mutations is quite a lot for a variant tohave. Just one would be more usual. The 17 found in b.1.1.7 therefore constitute a huge anomaly. How this plethora of changes came together in a single virus is thus the second question which needs an answer.something that is noticeable because it is different from whatis usual異常現象，反常現象;畸形:•Inthose days, a woman professor was still an anomaly.那個時候，女教授仍舊十分稀罕。•variousanomalies in the tax system稅制中的種種不正常現象a plethora of sth formala very large number of something,usually more than you need過多，過剩，過量:•a plethora of suggestions一大堆建議【12】The authors of the cog-uk paper have a suggestion. This is that, rather than being a chance accumulation of changes, b.1.1.7 might itself be the consequence of an evolutionary process—but one that happened in a single human being rather than a population. They observe that some people develop chronic covid-19 infections because their immune systems do not work properly and so cannot clear the infection. These unfortunates, they hypothesise, may act as incubators for novel viral variants.Word Family: verb: hypothesize; noun: hypothesis; adverb:hypothetically; adjective: hypotheticalto suggest a possible explanation that has not yet been proved to be trueScientists hypothesize that the dinosaurs were killed by a giant meteor.a heated container for keeping eggs warm until they hatch (=theyoung birds are born)孵化器something that is slightly different from the usual form of something變體，變化形式:•This game is a variant of netball.這種運動是無擋板籃球的一種變化形式。•avariant on the typical Hollywood hero典型的好萊塢英雄的變身加入小打卡千人打卡群，聆聽完整外刊講解版,帶全文翻譯，