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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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The advancements in the diagnosis and treatment of hematologic malignancies

Blood is vital for human, yet the blood disease bring much suffering both physically and psychologically to human. Learn the advancements in blood disease, then try to cure the disease and always comfort the patients.
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局部解剖学


【国家精品课】局部解剖学是按照人体的局部分区，研究各区域内器官与结构的位置、形态、毗邻、层次关系和临床应用的科学。
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精准医学


从遗传学、流行病学及多种疾病领域，理解精准医学的概念、研究方法与个体化诊疗应用。
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医学统计学原理


医学统计学原理深度融合数据科学思维，有效衔接复杂统计理论与生物医学数据分析，通过课程学习，领悟统计学方法，具备解决医学科研设计和分析的知识、能力和素养。
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中国政治制度史


本课程将对我国上自夏朝、下迄清末时期政治制度的构成、功能进行介绍，分析探索我国古代政治制度演变的规律。让我们一起，在这里读懂华夏政制！
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Beijing University of Civil Engineering and Architecture
最优控制


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新型航空遥感数据处理


聚焦机载激光雷达、倾斜摄影和无人机摄影测量数据的关键后处理技术。
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运动与健康


以科学运动处方为核心，结合营养、训练方法与运动伤害急救，帮助学生建立安全有效的健身方案。
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文献计量综述法及citespace的应用


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高效学习与生涯规划——让研究生阶段成为职涯加速器


帮助研究生通过高效学习与生涯规划，将研究生阶段转化为职业发展的加速器。
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中国民族音乐概论


听民间歌曲之纯朴、悦民间舞蹈之雅俗、品说唱艺术之意味、叹民族器乐之气魄、悟戏曲高台之风骨；大美中华，音乐瑰宝，让我们畅游在民族民间音乐文化的浩瀚宇宙。
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艺术传播


以符号、媒介与文本分析为核心，探讨艺术传播中的艺术符码与审美话语。
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设计语言与心理研究


以感知、符号、色彩与情感心理为线索，探索以人为本的创意设计语言。
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声乐舞台实践


通过角色分析、作品诠释与舞台决策，解决声乐演唱者在歌剧及艺术歌曲舞台实践中的具体问题。
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Everyone Loves Design

Design is everywhere. Design is a way of thinking that teaches us how to find problems and how to solve them effectively. Design is a mirror; it is the epitome of the world. Let’s learn how to find the beautiful world around us and live a more positive a…
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