可读性 Readability
The traditional method of assessing texts on difficulty consists of various readability formulas. More than 40 readability formulas have been developed over the years (Klare, 1974-1975). The most common formulas are the Flesch Reading Ease Score and the Flesch Kincaid Grade Level.
评估文本难度的传统方法包括各种可读性公式。多年来，已开发出 40 多种可读性公式（Klare，1974-1975 ）。最常用的公式是Flesch Reading Ease和Flesch_Kincaid Grade Level。