[KongchangAI]
Unverified82% confidenceDecision RuleTime unknown

出行/驾驶类课程优先选择单节5-15分钟的碎片化颗粒度,因为该场景实际学习多发生在通勤、候车间隙,超过20分钟的长视频完课率通常低于30%

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