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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.

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大众文化与传媒


本课程主要介绍大众文化理论及大众文化研究领域内的传媒研究，使学生能够对大众文化和传媒的理论构建较为完备的知识体系，并以此为基础分析、解读当前的各种文化现象。
- XuetangX
- Self-Paced
- Free Online Course
英语语言与文化


从语言与文化融合的视角，探讨英语表达、词汇和修辞背后的社会习俗、神话、历史与文学。
- XuetangX
- Self-Paced
- Free Online Course
国际贸易实务（英文）

这是一门用英文介绍国际贸易实务的课程，在提高你对国际贸易的理解和进出口技能的同时，还能提升你的专业英语学习和英文思维水平，增强你的国际交流实战能力。
- XuetangX
- Self-Paced
- Free Online Course
商务英语综合课程(第四册）

融合语言、文化与商务热点，通过英文课文研读培养国际商务沟通、跨文化交流与批判性思维能力。
- XuetangX
- Self-Paced
- Free Online Course
商务口译


通过情境任务训练商务活动中的口译技能，以及听辨、记忆、笔记和应对口译困境的能力。
- XuetangX
- Self-Paced
- Free Online Course
大数据技术原理与应用


在现今的社会，大数据的应用越来越彰显他的优势，它占领的领域也越来越大，大数据技术原理与应用是计算机科学与技术、数据科学与大数据专业本科生的一门专业必修课
- XuetangX
- Self-Paced
- Free Online Course
医学影像仪器


介绍诊断用X线机、CT、MRI及核医学仪器的组成、原理与成像技术。
- XuetangX
- Self-Paced
- Free Online Course
核电厂系统与设备


聚焦现代大型压水堆核电厂，讲解反应堆冷却系统、核岛辅助系统和二回路设备。
- XuetangX
- Self-Paced
- Free Online Course
医学图像处理


《医学图像处理》是生物医学工程专业、医学信息工程专业的一门专业必修课，主要讲授医学图像处理最基本的概念、技术方法等内容，使学生对整个学科有较完整的框架性的认识。
- XuetangX
- Self-Paced
- Free Online Course
电路理论


以直流、交流和暂态电路的统一分析为主线，涵盖运算放大器、耦合电感、频率响应与三相电路。
- XuetangX
- Self-Paced
- Free Online Course
环境与健康


系统认识大气、水、食品和土壤污染如何影响健康，并学习识别相关环境健康风险。
- XuetangX
- Self-Paced
- Free Online Course
眼保健与眼病预防


全面论述了眼保健与眼病预防的概念、措施与方法，反映了国内外近几年来有关眼保健与眼病预防的最新研究成果与发展方向。
- XuetangX
- Self-Paced
- Free Online Course
外科学


系统学习常见外科疾病的诊断治疗原则，并训练临床诊疗思维与外科基本技能。
- XuetangX
- Self-Paced
- Free Online Course
牙体牙髓病学


课程视频短小精炼，有助于学生利用碎片化时间进行知识点的学习。
- XuetangX
- Self-Paced
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儿童口腔医学


儿童口腔医学是研究自胎儿至青少年这一时期，小儿牙颌系统的生长发育、保健和疾病防治的医学科学。它服务的对象是18岁以下的儿童、青少年。
- XuetangX
- Self-Paced
- Free Online Course

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