n.多余；过剩；奢侈品
This book has a superfluity of introduction. 此本书中有多余的介绍。
The teacher pruned the student's article of its superfluities. 老师删去这个学生文章中的多余内容。
There is also a superfluity of stop signals. 此外，停止符的数量也有冗余。
