lumbal plexus

例句：

1. 1. The patient wasdiagnosed with a lumbar plexus injury.
   患者被诊断出腰丛神经损伤。
2. 2. The surgery involved removing thelumbar plexus to relieve pain.
   手术涉及切除腰丛神经以缓解疼痛。
3. 3. The lumbar plexusis responsible for controlling the muscles in thelower back and legs.
   腰丛神经负责控制下背部和腿部的肌肉。