translation.en: And you heard of this example, where, when we launched our very first course -- and this was an MIT-hard circuits and electronics course -- about a year and a half ago, 155,000 students from 162 countries enrolled in this course.
translation.zh: 大家应听说过这个事例 当时我们推出了第一档课程 麻省理工学院的 电路与电子技术课程 大约一年半以前 来自162个国家的155,000名学生 注册了这档课程