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Chasing 100M Daily Users, Duolingo Reconsiders Ads, Paying Influencers, and Its Most Expensive Plan

AI got cheap enough that Duolingo’s most expensive plan may not survive it. I read the earnings call transcript and opened the app to see what is actually changing for learners.

Dhawal Shah Sep 03, 2026

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探索清华大学2021年研究生开学典礼上的重要讲话和寄语，了解学校对新生的期望与愿景，感受浓厚的学术氛围。
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邺架轩读书沙龙


探索中国古典文学的精髓，通过深入讨论和分析，提升文学鉴赏能力，培养人文素养，建立对传统文化的深刻理解。
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学堂在线×快手《新知如师说》第二季


以经济、哲学、历史、传统思想与短视频等专题，串联中国文明、现代社会与日常生活的通识讲座。
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社会主义建设理论与实践


从历史、国际与理论视角梳理中国特色社会主义现代化道路，分析改革开放经验与社会主义建设的成败得失。
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探索中的清华“写作与沟通”课


探索清华“写作与沟通”课程，聚焦写作与沟通能力。
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研究生培养系列讲座


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Discover inspiring messages and guidance from Tsinghua University faculty as they share wisdom and encouragement for the new academic year ahead.
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