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First published in 1869, Nature is the world’s leading multidisciplinary science journal. Nature publishes the finest peer-reviewed research that drives ground-breaking discovery, and is read by thought-leaders and decision-makers around the world.

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Sci-Hub website. Get free access to academic journals. Download research papers for free from ScienceDirect, IEEE, Wiley, Springer, Nature and others

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Dictionary.com is the world’s leading online source for English definitions, synonyms, word origins and etymologies, audio pronunciations, example sentences, slang phrases, idioms, word games, legal and medical terms, Word of the Day and more. For over 20 years, Dictionary.com has been helping millions of people improve their use of the English language with its free digital services.

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JSTOR is a digital library of academic journals, books, and primary sources.

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Welcome to Testbook.com - The most trusted exam preparation Site for competitive exams. Prepare for Exams like Banking, SSC, Railways, GATE, UPSC with 26000+ Mock tests and Live Coaching.

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Weblioは560の専門辞書や国語辞典、百科事典から一度に検索する辞書サイトです。

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MDPI is a publisher of peer-reviewed, open access journals since its establishment in 1996.

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Semantic Scholar uses groundbreaking AI and engineering to understand the semantics of scientific literature to help Scholars discover relevant research.

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SAGE is a global academic publisher of books, journals, and a growing suite of library products and services.

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Zju.edu.cn is ranked number 1393 in the world and links to network IP address 67.215.65.132.

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Internshala is India's no.1 internship and training platform with 40000+ paid internships in Engineering, MBA, media, law, arts, and other streams.

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万方数据知识服务平台-中外学术论文、中外标准、中外专利、科技成果、政策法规等科技文献的在线服务平台。

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程序员大本营,技术文章内容聚合第一站。

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Kaggle is the world’s largest data science community with powerful tools and resources to help you achieve your data science goals.

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Open-access publisher of peer-reviewed scientific articles across the entire spectrum of academia. Research network for academics to stay up-to-date with the latest scientific publications, events, blogs and news.

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Take online courses on Study.com that are fun and engaging. Pass exams to earn real college credit. Research schools and degrees to further your education.

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Home

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Единый каталог образовательных услуг. Курсы профессиональной переподготовки и повышения квалификации, видеолекции, тестирование для учителей. Более 5 500 000 материалов для учителей!

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Simplilearn is the popular online Bootcamp & online courses learning platform that offers the industry's best PGPs, Master's, and Live Training. Start upskilling!

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Pioneers in Language Reference for 200 years. Popular and trusted online dictionary with over 1 million words. Find definitions, meanings, synonyms, pronunciations, translations, origin and examples.

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X-MOL科学知识平台,顶级期刊论文图文内容每日更新,海内外课题组信息,行业新闻文摘,化学类网址导航,化学软件和数据库导航,及更多其他内容

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中国科学技术大学.

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Turnitin solutions promote academic integrity, streamline grading and feedback, deter plagiarism, and improve student outcomes.

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Our online dictionary is the best source for definitions and origins of words, meanings of concepts, example sentences, synonyms and antonyms, grammar tips, and more.

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Skillshare.com is ranked number 1625 in the world and links to network IP address 104.20.1.109.

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The University of Toronto is a globally top-ranked public research university in Toronto, Ontario, Canada.

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Home | University of California, Berkeley.

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VitalSource .

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Hnu.edu.cn is ranked number 1691 in the world and links to network IP address 58.20.46.195.

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人人文库(renrendoc.com)美如初恋,人人文库是一个在线文档分享平台。你可以上传设计图纸,研究报告,设计标准,策划管理方案,论文等电子文档,分享最新的行业资讯。

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中国教育考试网 中国教育部考试中心 考试

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NYU.

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ACS is one of the world’s largest scientific societies and the premier home of chemistry professionals. Find career opportunities, educational resources and more.

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Cornell University is a private research university that provides an exceptional education for undergraduates and graduate and professional students. Cornell's colleges and schools encompass more than 100 fields of study, with locations in Ithaca, New York, New York City and Doha, Qatar.

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Codecademy is the easiest way to learn how to code. It's interactive, fun, and you can do it with your friends.

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Columbia University in the City of New York.

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بزرگ ترین پروژه آموزش آنلاین ایران - ارائه آموزش‌های ویدئویی و فیلم‌های آموزشی هوش مصنوعی، مهندسی کامپیوتر، برق، مکانیک، عمران، صنایع و سایر رشته‌های مهندسی

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College Board - SAT, AP, College Search and Admission Tools.