必答网(www.bidaa.com)是向网民提供非机器的精确解答的网站。不同于利用搜索引擎和全文检索方式去提供答案,在该网站上提出的问题都是由人而非机器来解答的。该网站是一个电子商务网站,一个出售各种问题的答案的商务网站,小到衣食住行,大到宇宙太空,只要你能想到的,就会有人回答你。该网站在很大程度上是一个互助网站,很象一个提问题和求解答的信息集 Betfair (www.bidaa.com) is a site that provides non-machine accurate answers to netizens. Rather than using search engines and full-text search to provide answers, questions posed on the site are answered by people, not machines. The site is an e-commerce site, a business website that sells answers to a variety of questions, ranging from basic food to living space to astrophysics, as long as you can think of, someone will answer you. The site is largely a mutual aid site, much like a set of questions and answers