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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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营销：人人都需要的一门课


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会计学原理


【国家精品课】学习会计学原理可以了解和熟悉会计这种国际通用的商业语言，完善自己的知识结构体系，还可以为深入学习会计学其他课程打下基础。
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社会研究方法


介绍社会科学研究的基本流程，涵盖研究设计、选题、抽样、问卷、观察与访谈，并指导撰写研究计划书。
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公共管理前沿——社会企业家精神


当前我国面临环保、就业、贫困等众多社会问题的挑战，怎么办？问题的解决之道在于我们需要有一种社会企业家精神，需要掌握社会创新的理论与方法！
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PPP理论与实践


系统讲解PPP从治理理念、运作模式到风险、财务、法律和交易结构的理论与实务。
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面向未来社会的服务设计与管理


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生产计划与控制


生产什么品种？生产多少？何时生产？生产计划与控制是制造企业生产运营管理的主要手段。这门课程教会你如何安排生产计划，如何组织精益化生产。
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大数据治理与政策


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运筹学


以经典模型与算法为主线，深入讲解线性、整数、动态、非线性规划及图与网络分析，并关注算法创新。
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公共事务伦理


通过案例、情境实验与对话讨论，探讨公共制度伦理及公共管理者的道德选择困境。
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本课程为蓝志勇教授多年来从事公共管理与公共政策的教学和研究的思想和体会，是根据特定的MPA学生群体做出的课程设置。
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电子政务


系统介绍电子政务的技术基础、系统整合、数据开放、绩效评估、项目规划及管理体制。
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工程师如何升级成为企业经营管理者？企业运营如何提高效率、降低成本、改善质量？本课程面向理工科学生，普及企业运营管理的基本思路与方法，助力你走上的职业生涯拓展、晋级的快车道。
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