名词
中文翻译：后柱
同义词：
['posterior part', 'posterior vertebral column']
例句：
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1. The posteriorramus of the spine is responsible for supporting the weight of the body.
脊柱的后柱负责支撑身体的重量。
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2.During surgery, the surgeon must carefully dissect the posterior ramus to avoid damaging nerves.
在手术中，外科医生必须小心地分离后柱，以避免损伤神经。
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3.The posterior ramus of the femur is where the knee joint is located.
股骨的后柱是膝关节所在的位置。