安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
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- Khan Academy | Free Online Courses, Lessons Practice
Created by experts, Khan Academy’s library of trusted, standards-aligned practice and lessons covers math K-12 through early college, grammar, science, history, AP®, SAT®, and more It’s all free for learners and teachers
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Learn new job skills in online courses from industry leaders like Google, IBM, Meta Advance your career with top degrees from Michigan, Penn, Imperial more
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Explore 13 diverse categories and 300+ practical skills —from leadership to cooking to communication Choose from bite-sized lessons, longer interactive classes, or an AI class assistant to customize your learning What’s in every MasterClass membership? Meet the world's best New classes added every month whenever you need it
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Class Central aggregates courses from many providers to help you find the best courses on almost any subject, wherever they exist
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Udemy is an online learning and teaching marketplace with over 250,000 courses and 80 million students Learn programming, marketing, data science and more
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Google Classroom helps educators create engaging learning experiences they can personalize, manage, and measure Part of Google Workspace for Education, it empowers educators to enhance their
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