This function returns the result to date of evaluating the formula of which it is a part (in other words the result as far as that evaluation has got). Its main use is together with the STYLE() function to apply selected styles to a cell depending on the cell contents.
该函数返回直到计算公式时的结果，该公式是函数的一部分（也就是说已经得到的计算结果）。它主要用途是与函数 STYLE() 一同应用到由单元格内容决定所选的样式中。