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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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腹盆部疾病影像案例分析


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当代口腔正畸学


聚焦错𬌗畸形的诊断与治疗决策，涵盖隐形矫治、数字化正畸及人工智能等当代技术。
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医学生物学实验室与生物安全


系统讲解医学与医学生物学不同实验环境中的安全标准、风险防控与事故处理要求。
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药物信息学


聚焦药学信息资源的检索、评价与利用，涵盖专业数据库、专利信息及学术研究应用。
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分子影像学进展


系统介绍分子影像学的核医学、光学、磁共振与超声成像技术及其研究进展。
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口腔临床种植美学


聚焦美学区种植的五大要素，以及种植体周骨、软组织管理和并发症，连接美学设计与临床实践。
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医学分子生物学的基础与前沿进展


聚焦表观遗传、细胞周期与细胞死亡在肿瘤发生发展及防治中的作用，并介绍相关前沿研究进展。
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肝硬化门脉高压热点问题解读


聚焦肝硬化门静脉高压的病理机制、诊断及药物、内镜、介入和手术治疗新进展。
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现代口腔种植学


聚焦美学区、上颌窦、骨再生与软组织增量的现代口腔种植临床策略。
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Advancing Molecular Imaging

A multidisciplinary introduction to molecular imaging connects targeted probes with nuclear, magnetic resonance, optical, ultrasound, and multimodal methods.
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线粒体医学


线粒体结构和功能的异常经常会诱发多系统疾病，线粒体医学是一门新兴的、多学科交叉的课程。本课程基础与临床相结合，讲授线粒体医学的前沿知识，更好的培养学生的理论水平和实践能力。
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面向复杂生物医学数据，讲解纵向、多中心、时间序列及跨组学数据的统计分析方法。
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心脑血管药理学研究前沿与进展


聚焦心脑血管药物作用机制、临床用药与研究前沿，涵盖RAAS、抗血栓及缺血性脑卒中治疗进展。
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Cell Death and Diseases of Central Nervous Systerm

Graduate-level tour of apoptosis, autophagy, ferroptosis and anastasis, linking each cell-death mode to glioma, neurodegenerative disease and autism through current research.
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Week-by-week walk through human prenatal development from gametes to fetal circulation, pairing each organ system's formation with the birth defects that arise when it goes wrong.
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