musculus geniohyoideus

例句：

1. 1.The muscles in the neck are responsible for supporting the head and shoulders.
   颈部的肌肉负责支撑头部和肩膀。
2. 2. Muscles are essential for maintaining good posture and preventing back pain.
   肌肉对于保持良好的姿势和预防背痛至关重要。
3. 3.During sleep, the body relaxes and the muscles at the base of the neck become more relaxed.
   睡眠时，身体放松，颈部基部的肌肉变得更加放松。