Zhège / hánshù / zài / zhěnggè / qūjiān / shàng / juéduì / liánxù / yīncǐ / kěyǐ / jìnxíng / jīfēn这个函数在整个区间上绝对连续,因此可以进行积分。This function is absolutely continuous over the entire interval, so it can be integrated.