early 15c. (earlier superflue, late 14c.), from Latin superfluus "unnecessary," literally "overflowing, running over," from superfluere "to overflow," from super "over" (see super-) + fluere "to flow" (see fluent). Related: Superfluously; superfluousness.
实用例句
1. I rid myself of many superfluous belongings and habits that bothered me.
我把很多无用的物品都丢掉了，并且改掉了一些让我烦心的习惯。
来自柯林斯例句
2. She gave him a look that made words superfluous.
她看了他一眼，这已表明一切，无须多言了。
来自《权威词典》
3. He had already been told, so our comments were superfluous.
早就有人同他说过, 所以我们的意见是多余的.
来自《简明英汉词典》
4. It would be superfluous to dwell on the matter any more.
不待赘言.
来自《现代汉英综合大词典》
5. She fined away superfluous matter in the design.