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Viruses: The aliens among us段落精講請掃下方圖片二維碼查看+全文PDF加小編入群。Viruses are unimaginably varied and ubiquitous.And it is becoming clear just how much they have shaped the evolution of allorganisms since the very beginnings of life. In this, they demonstrate theblind, pitiless power of natural selection at its most dramatic. And—forone group of brainy bipedal mammals that viruses helpedcreate—they also present a heady mix of threat and opportunity.
·Ubiquitous adjective
seeming to be everywhere – sometimes used humorously
似乎無處不在的〔有時為幽默用法〕
Coffee shops are ubiquitous these days.
如今好像到處都是咖啡館。
·Natural selection noun UNCOUNTABLE
the process by which only plants and animals thatare naturally suitable for life in their environment will continue to live andbreed, while all others will die out
自然選擇
·Brainy adjective
able to learn easily and think quickly
聰明的，多智的，敏銳的
He always was the brainy one.
他一向是個聰明人。
·Bipedal adjective
(of animals ) using only two legs forwalking
雙足行走的；兩腿行走的
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