reading level的用法和样例：
例句
- The author thinks a lack of vocabulary ability is the major factor that restrains reading proficiency.
因此，笔者认为，词汇能力是影响阅读水平的最主要因素之一。 - At the simplest level pupils can interrogate the library stock database using the simple keyword search module, which supports reading levels and book reviews.
在简单的水平，学生可以审问图书馆股票数据库使用简单的关键字搜索模块，它支持阅读水平和书评。
