默课是什么意思?

来源: 于 2021-08-22 16:58:20 [旧帖] [给我悄悄话] 本文已被阅读：次

Yes it's online. But who doesn't use computer and cellphone now? For protecting eyes?

It's not free open soursce like in some colleges. There's a tuition, about $20/hr.