小女孩们在上芭蕾舞课，老师们作为活模特给孩子们展示动作，让她们去模仿和练习。
Young girls in a ballet dancing class. The instructors are serving as live models, showing the girls a behavior that they are to imitate and practice.
小女孩们在上芭蕾舞课，老师们作为活模特给孩子们展示动作，让她们去模仿和练习。
Young girls in a ballet dancing class. The instructors are serving as live models, showing the girls a behavior that they are to imitate and practice.
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