It sounds like you could do with an assistant but that's obviously not possible, so what about having an onlinesystem that students can use to do their scheduling?
听起来你需要一个助手，但这显然是不可能的，那如果有一个在线系统来帮助学生做他们的日程安排呢？
2
The NLS wasn’t just the onlinesystem, it was the networked system.
NLS不仅仅是一个线上系统，而且还是一个网络系统。
3
We also model the customer's UserAccount, which provides access to the onlinesystem.