acranial

例句：

1. 1. The patient's acranial CT scan revealed no abnormalities.
   患者的颅内CT扫描未发现异常。
2. 2.The researcher focused on the acranial development of the species.
   研究者专注于该物种的脑发育研究。
3. 3. The surgeon performed an acranial craniectomy to remove the tumor.
   外科医生进行了一次颅骨切除手术以移除肿瘤。