The tail consists of 4 segments: neck region, midpiece, principle piece and endpiece.
尾部又分4段：颈段、中段、主段和末段。
Objective to study the diagnosis and treatment of malignant hemangiopericytoma in head and neck region.
目的探讨头颈部恶性血管外皮瘤的诊断和治疗。
Notice that the most important region to work on is his neck.
注意了，脖子是最重要的修饰区域。
Notice that the most important region to work on is his neck.
注意了，脖子是最重要的修饰区域。
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