According to the 1643 Licensing Order against which Milton is directing this treatise, Areopagitica, a book has to be sent to the licensing office for approval before it can be published.

根据和弥尔顿《论出版自由》相斥的1643年《出版管制法》,每本书都要送去出版许可办公室,得到许可后才能出版。

耶鲁公开课 - 弥尔顿课程节选

Once you have registered, if some other slots become available that weren't previously available, I gather you'll be sent some sort of email by the system, in case some other time would be better for you.

一旦你注册了，之前的有些项目,就可用了，系统会用邮件方式向你发送，让你的时间更方便。

耶鲁公开课 - 死亡课程节选