名词
中文翻译：胸骨
同义词：
['thoracic vertebrae', 'sternum例句：1. The patient was diagnosed with a retrosternal mass.（患者被诊断出有胸骨上的肿块。）']
例句：
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1. The patient was diagnosed with a retrosternal mass.
患者被诊断出有胸骨上的肿块。
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2.The doctor performed an operation to remove the patient's retrosternal tumor.
医生进行了手术，切除了患者的胸骨肿瘤。
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3. The patient's chest X-ray showed a retrosternal fracture.
患者的胸部X光显示有胸骨骨折。