entry level
noun [ U ] uk/ˈen.tri ˌlev.əl/ us/ˈen.tri ˌlev.əl/
（组织的）最底层;（工种等的）初级水平
the lowest level of an organization, type of work, etc.
E-commerce is presenting a lot of new jobs at entry level. 电子商务提供了很多新的初级水平的工作机会。
最廉价（最简单或初级）的商品（或服务）
the cheapest or simplest version of a particular product or service
The business of selling low-profit, entry-level personal computers is growing rapidly. 出售低利润初级个人电脑的业务增长迅速。