1. The patient had to undergo craniectomy to relieve pressure on the brain.
病人不得不接受颅骨切开手术以减轻对脑部的压力。

2. The surgeons craniectomized a small portion of the skull to gain access to the tumor.
外科医生切除了颅骨的一小部分以便进入肿瘤部位。