平均天数超过计划的原因是，有一次征聘耗时超过平均时间，有 900 多名申请者，进行了两轮书面评估，其中第二轮涉及对 77 份申请者论文进行人工评分
The higher average number of days was attributable to one single recruitment that proved to be more time-consuming than average, comprising more than 900 applicants, with two rounds of written assessments, the second of which involved the manual grading of 77 candidate essays