Difficulty is the backbone of a set of movement and the only factor to decide technical value score for a whole set of movement.
难度是一套动作的主干，是决定成套动作技术价值评分高低的唯一因素。
Difficulty is the backbone of a set of movement and the only factor to decide technical value score for a whole set of movement.
难度是一套动作的主干，是决定成套动作技术价值评分高低的唯一因素。
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