Unverified85% confidenceFactTime unknown
多数学习机的优质课程需额外付费会员,且会员到期后课程失效,购买前需问清哪些是永久内置、哪些需持续续费,避免设备费低但会员费长期高昂
1
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85%
Confidence
Medium-term (~90 days)
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