数据经过Diigo的提炼变成了知识，因为人们在选取和提炼书签和评注时进行了人工过滤。
Data becomes knowledge refined at Diigo because of the human filtering aspect inherent in the way people can "slice" or refine their annotations and bookmarks.
论述了水井井周渗透性降低的原因，从钻井方法、冲洗液性能、建立人工过滤层、洗井等方面探讨了改善渗透性的措施。
Measures to improve perrne- ability reduction are discussed in terms of the drilling method, fluid properties, artificial infiltration layer, and well flushing, etc.
垃圾邮件过滤程序使用基于人工智能的学习和分类技术，每天从所有邮件里鉴别出2000亿封垃圾邮件中的99.9%。
Spam filtering programs using A.I. learning and classification techniques correctly identify over 99.9% of the 200 billion spam e-mails sent each day.
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