translation.en: So traditionally, semester upon semester, for the past several years, this course, again, a hard course, had a failure rate of about 40 to 41 percent every semester.
translation.zh: 用传统的教学方式，一个学期接一个学期 在过去几年里，这门课 这门难学的课 大约有40 %到41%的失败率 每个学期