课程很丰富
先是用了小程序 后来知道还有APP 已经学了三门课了 教学体验非常好
Yes, 绯凡新知 is completely free and it doesn't have any in-app purchases or subscriptions.
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绯凡新知 is free.
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先是用了小程序 后来知道还有APP 已经学了三门课了 教学体验非常好