website introduction：Google's free online language translation service instantly translates text and web pages. This translator supports: English, Arabic, Bulgarian, Chinese, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hindi, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romanian, Russian, Spanish and Swedish.
website introduction：A veritable cornucopia of streetwise lingo, posted and defined by its readers.
website introduction：Translation, dictionary, conjugation, grammar for English, French, Spanish, German, Italian, Russian, Chinese, Arabic, Japanese, Hebrew, Polish, Dutch ...
website introduction：Offers free language instruction where users translate documents and vote on the accuracy of those translations. Contains a description of how it works, a blog, and a study of the project's efficacy.
website introduction：With a look into the pages of the magazine, plus interactive features, maps, photography, news, exhibitions, things for kids, educational features, and hosting live events. Searchable web site.
website introduction：Official Site.
website introduction：Noaa:United StatesCountries海洋气象局隶属于United StatesBusiness部下属的科技部门，主要关注地球的大气和海洋变化，提供对灾害Weather的预警，提供海图和空图，Management对海洋和沿海Resources.的利用和保护，研究如何改善对Environment的了解和防护。
website introduction：Authoritative weekly newspaper focusing on international politics and business news and opinion..
website introduction：elsevier.com is the web resource for the publishing house Elsevier, specializing in scientific, technical and medical information. Find all products, support and contacts, and information about the company.
website introduction：Scans of print journals, with 10 major math journals (requires subscription).
website introduction：Blockchain.info is a utility site for the e-currency Bitcoin. The site allows you to browse the bitcoin blockchain, view currency statistics and offers a free web based online wallet.
website introduction：An accredited university offering bachelor's, master's, and doctoral degrees in over 150 fields of study in Boulder, Colorado.
website introduction：Includes data for the latest Census of Population and Housing, the U.S. and World Population clocks.
website introduction：Promotes research and represents the professional interests of psychologists in the United States. Includes information on publications and conferences, and a find-a-psychologist referral feature.
website introduction：Offers daily news from several areas of science and technology.
website introduction：The meaning and history of first names.
website introduction：Principal fact-finding agency for the Federal Government in the broad field of labor economics and statistics. Collects, processes, analyzes, and disseminates essential statistical data to the American public, the U.S. Congress, other Federal agencies, State and local governments, business, and labor.
website introduction：Online, free-content encyclopedia in the Hebrew language; a useful reference for assignments and Hebrew lessons related to general content and Area Studies.
website introduction：A directory of local buyers and sellers of Bitcoins. Lists the traders closest to your current location.
website introduction：The main Bitcoin discussion forum, includes subforums for technical support, mining, development and economics.
website introduction：Official web site offers information on academics, administration, athletics, campus, culture and arts, jobs and facilities.
website introduction：Magazine of global politics, economics and ideas. Published bimonthly in print and daily online by the Slate Group, a division of the Washington Post Company.
website introduction：The Social Science Research Network (SSRN) is a multi-disciplinary online repository of scholarly research and related materials providing Tomorrow s Research Today. Authors can share and distribute their research on an interdisciplinary basis at multiple points in its evolution. SSRN s eLibrary, a leading resource in the social sciences and humanities, has downloaded 23 million full-text PDFs and includes over 200,000 papers from 100,000 authors.
website introduction：Offers free software, online mapping and GIS training, demos, data, product and service information, user scripts, and related information. Makers of ArcView, ArcGIS and ArcIMS.
website introduction：italki.com is an online destination for learning foreign languages. italki connects people from around the world in a friendly community to learn from each other. italki helps people meet online to do free language exchanges. italki also helps students connect with teachers for paid online lessons. In addition, italki has many free language learning features, such as questions and answers, group discussions, and multimedia materials for self-study. italki is both a social network and a marketplace. The social network helps bring people together to communicate and learn. The marketplace gives students, teachers, and companies the abililty to transact online.