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Get Pro now在紧张激烈的训练和比赛中，由于肌肉连续过快地收缩，放松时间太短，或肌肉突然强烈地收缩，均可使肌肉收缩与放松的协调交替关系发生破坏，引起肌肉发生痉挛。 Sticker GIF
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|Source: pic0.v4.cc|Created May 13, 2017
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