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Windows system utilities to maximize productivity. Contribute to microsoft/PowerToys development by creating an account on GitHub. Windows 系统实用程序，以最大限度地提高生产力。通过在 GitHub 上创建帐户为 microsoft/PowerToys 开发做出贡献。

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Free PDF Solutions - Online & Download - PDF24

Free and easy to use PDF tools for all your PDF issues. Online & Download. 免费且易于使用的 PDF 工具可解决您的所有 PDF 问题。在线下载。

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PDF24 Fax: Choose a PDF file

PDF24在线传真。

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美国国家地理杂志

Explore National Geographic. A world leader in geography, cartography and exploration. 探索国家地理。地理、制图和勘探领域的世界领先者。

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FutureLearn: Online Courses and Degrees from Top Universities

Join millions of people learning on FutureLearn. Find online courses and degrees from leading universities or organisations and start learning online today. 加入在 FutureLearn 上学习的数百万人。查找领先大学或组织的在线课程和学位，并开始在线学习

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edx

Access 2000 free online courses from 140 leading institutions worldwide. Gain new skills and earn a certificate of completion. Join today. 访问来自全球 140 家领先机构的 2000 门免费在线课程。获得新技能并获得结业证书。今天参加。

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Online Creative Courses from Top Universities | Kadenze

Kadenze brings together educators, artists, and engineers from leading universities to provide world-class education in the fields of art and creative technology. Email us at communications@kadenze.com or call us at (661) 367-1361 Kadenze 汇集了来自一流大学的教育工作者、艺术家和工程师，在艺术和创意技术领域提供世界一流的教育。给我们发电子邮件：communications@kadenze...

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斯坦福在线

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Online Courses - Learn Anything, On Your Schedule | Udemy

Udemy is an online learning and teaching marketplace with over 183,000 courses and 40 million students. Learn programming, marketing, data science and more. Udemy 是一个在线学习和教学市场，拥有超过 183,000 门课程和 4000 万学生。学习编程、营销、数据科学等。

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Alison | Free Online Learning with Certificate & Diploma Courses

Free online courses with certificates. Join 4 million graduates and empower your career. Study, learn, certify, upskill with free online learning and training. 带证书的免费在线课程。加入 400 万毕业生，为您的职业生涯赋能。通过免费的在线学习和培训学习、学习、认证、提升技能。

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Learn the Latest Tech Skills; Advance Your Career | Udacity

Advance your career with online courses in programming, data science, artificial intelligence, digital marketing, and more. Built with industry leaders. 通过编程、数据科学、人工智能、数字营销等在线课程提升您的职业生涯。与行业领导者共同打造。

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Distance Learning Courses and Adult Education - The Open University

The Open University offers flexible part-time study, supported distance and open learning for undergraduate and postgraduate courses and qualifications. 开放大学为本科和研究生课程和资格证书提供灵活的非全日制学习、远程支持和开放式学习。

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Coursera

Learn online and earn valuable credentials from top universities like Yale, Michigan, Stanford, and leading companies like Google and IBM. Join Coursera for free and transform your career with degrees, certificates, Specializations, & MOOCs in data...

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测速网 - 专业网速测试, 宽带提速, 游戏测速, 直播测速, 5G测速, 物联网监测 - SpeedTest.cn

测速网（SpeedTest.cn）提供网速测试, 网络质量检测, 5G测速, IPv6测速, 带宽检测, Wi-Fi测速, 宽带提速, 网络加速, 内网测速, 游戏测速, 直播测速, 物联网监测, 网站监测, API监测, Ping测试, 路由测试等专业服务, 拥有国内外大量高性能测试点, 覆盖电信, 移动, 联通, 网通, 广电, 长城宽带, 鹏博士等运营商。

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