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我孩子8个月,在吃奶时会突然停止吸奶,并全身用力、双手握拳、两腿伸直、直至面红耳赤后恢复正常。请问为什么会出现这种现象?
My child 8 months, will suddenly stop breast-feeding milk, and body force, both hands fist, legs straight until red-faced ears back to normal. Why does this happen?