本组资料共有4类20种异常姿势，以下肢交又、尖足、头不稳定和上肢后伸等最常见。
Among 20 kinds of abnormal postures of 4 types, lower limb across, tip foot, head shaking and upper-limb back stretching were the most common.
本组资料共有4类20种异常姿势，以下肢交又、尖足、头不稳定和上肢后伸等最常见。
Among 20 kinds of abnormal postures of 4 types, lower limb across, tip foot, head shaking and upper-limb back stretching were the most common.
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