机器先看的是结构。YouTube的内容长得都差不多：有标题、有简介、有标签，有时还有清晰的时间轴和章节。标题往往就是一个问题或主题，简介相当于摘要和补充说明，标签和分类是现成的语义标记，章节和时间点把一条长视频切成若干段。
Наталья Анисеева (редактор отдела оперативной информации)，推荐阅读电影获取更多信息
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Андрей Ставицкий (Редактор отдела «Наука и техника»)
The first commercial Sanger sequencing machine was produced that year by Applied Biosystems (ABS), which Hood had co-founded in 1981. Called the ABI 370A, it retailed for $92,500. Since Sanger never patented his method, other companies were free to develop competing products, and by 1988, there were three Sanger sequencing machines on the market. These were followed by numerous others, including the Perkin-Ellmer 3700, used by Celera and the Human Genome Project, and the ABS 3500 Genetic Analyzer, which is still found in many laboratories today.，更多细节参见PDF资料