自从2003年系统发布以来，大学堂已经稳定运行了7年时间，其间为数以百万计的用户提供过课程视频服务，收到了良好的社会效果。

Since it was released in 2003, the Realcouse system has been running stably for 7 years while providing video delivery service for millions of users, which has benefited the whole society a lot.

youdao

自从2003年系统发布以来，大学堂已经稳定运行了7年时间，其间为数以百万计的用户提供过课程视频服务，收到了良好的社会效果。

Since it was released in 2003, the Realcouse system has been running stably for 7 years while providing video delivery service for millions of users, which has benefited the whole society a lot.

youdao