lumbar support

例句：

1. 1.He sat on the couch with his back against the lumbar support.
   他坐在沙发上，背靠着腰椎支撑。
2. 2. She needed a lumbar support to help her stand up straight.
   她需要一把腰椎支撑来帮助她站直。
3. 3.The doctor prescribed him a lumbar support for his back pain.
   医生给他开了一个腰椎支撑来缓解他的背痛。