1. (书或电影的)续篇，续集
A book or film which is a sequel to an earlier one continues the story of the earlier one.

2. 后续的事;随之而来的事;结果;余波
The sequel to something that has happened is an event or situation that happens after it or as a result of it.

1. a part added to a book or play that continues and extends it

Synonym: continuation

2. something that follows something else

Synonym: subsequence