upper and lower level的用法和样例：
例句
- The draft defines the tasks of the control organs and the relationship between higher and lower control commissions.
党章草案规定了党的监察机关的任务和监察委员会的上下级之间的关系。 - Historically, deviations have occurred in relations between higher and lower Party organizations.
在我们党的历史上，关于上下级关系问题，是曾经出现过偏向的。
