以下为句子列表：
英文: Bilateral symmetry The arrangement of parts in fan organism in such a way that the structure can only be divided into similar halves (mirror images) along one plane.
中文: 左右对称：通过中央轴，只有一个对称面将生物体分成左右相等的两部分（镜像）。
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英文: Bilateral symmetry is characteristic of most free-moving animals, where one end constantly leads during movement.
中文: 两侧对称是大多数可以自由运动的动物的特征，这些动物始终有一端引导着运动。
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英文: Results: The results of 38 patients in 41 who got the sursical treatments were satisfactory, and the bilateral symmetry was satisfactory.
中文: 结果41例经手术整复的患者经术后观察表明，38例骨折复位良好，颌面部两侧对称性良好。
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