英语翻译
问题描述：
英语翻译
Although it has traditionally been thought that firm beds were better for orthopedic problems,a report in The Lancet concluded that people with back pain fare better on a medium to firm bed rather than a firm bed.
求后面一句的翻译.主要是“on a medium to firm bed”的意思.
答
中等偏坚硬的床