tentorial arms

例句：

1. 1.The surgeon removed the tentorial arm to relieve pressure on the brain.
   外科医生切除了天幕臂以减轻对大脑的压力。
2. 2.The patient was lying in bed with his tentorial arm extended.
   病人躺在床上，天幕臂伸展着。
3. 3.The researcher discovered a new mechanism that could potentially alter the tentorial arm's function.
   研究者发现了一种新的机制，可能会改变天幕臂的功能。