relief devices

例句：

1. 1. The new relief devices are designed to reduce stress on the body.
   这些新的缓解装置旨在减轻身体的压力。
2. 2. The relief devices were installed in the hospital to help patients recover faster.
   这些缓解装置在医院安装，以帮助病人更快地康复。
3. 3.The relief devices have been proven to be effective in treating chronic pain.
   这些缓解装置已被证明在治疗慢性疼痛方面是有效的。