interspace of lumbar vertebrae

例句：

1. 1. The two books areseparated by an interspace of pages.
   这两本书之间隔着一页的间隔。
2. 2. The teacherwalked between the students to ensure everyone waspresent.
   老师在学生们之间走动，确保每个人都在场。
3. 3. The car's engine isproducing a loud noise, and there's an interspace in the sound.
   汽车发动机发出很大的声音，声音中有一个空隙。