Designing a cover specifically for an e-book is rare: Most e-book covers are digital images of their print namesakes.
专门为一本电子书设计封面也很少见，大部分电子书的封面都是同名实体书封面的电子版。
Like their biological namesakes, computer viruses replicate by attaching themselves to a host (a program, or a computer) and coopting the host's resources to copy themselves.
就像他们生物学中的同名物一样，计算机病毒复制时就是将自己俯身于宿主上（一个程序或是计算机），然后利用宿主的资源来复制自己。
Viewers can add comments, keywords and identify people in images in the three sets - Launch/Takeoff, Building NASA, and NASA Center Namesakes, which records historical figures.
图片浏览者能够添加评论，关键词，在三个图集——“发射”、“NASA建设”与“用历史人物命名的NASA宇航中心”上圈人。
(in the only slightly amusing category is that the byline, Liu Wei, admittedly a very common name, seems here to mark a reporter as cheeky as his two artist namesakes.) the full article, just for fun.
唯一有趣的只是用公认的常见名字“刘伟”署名，似乎在此显示记者象另两个同名艺术家一样厚脸皮。
(in the only slightly amusing category is that the byline, Liu Wei, admittedly a very common name, seems here to mark a reporter as cheeky as his two artist namesakes.) the full article, just for fun.
唯一有趣的只是用公认的常见名字“刘伟”署名，似乎在此显示记者象另两个同名艺术家一样厚脸皮。
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