餘[yú] 基本解释：
新英汉大词典：
- 余(餘)[yú]
- 动词- （剩下） remain; leave:
Nine minus four is five.; Four from nine leaves five.; If you take (away) 4 from 9, 5 remains.9减4余5。
After paying all the expenses, there is a balance of fifty yuan.收支相抵，尚余50元。
- 形容词- （剩下的） surplus; spare; remaining:
afterglow;落日余辉
the remaining part; the remainder;下余部分
- 数词- （大数或度量单位等后面的零头） more than; odd; over:
over 200 jin;200余斤
fifty odd years50余年
- 名词- （指某种事情、情况以外或以后的时间） spare time:
over a cup of tea or after a few glasses of wine; at one's leisure;茶余酒后
after working hours; after work工作之余
- （姓氏） a surname:Yu Yuan余渊
- (我) I
以上内容来源于：《新汉英大辞典》
例句与用法：
I spent all my spare time reading poetry.
Brazil has a big surplus of coffee.
He spent the remainder of his life in the country.
I was subjected to a lengthy inquisition into the state of my bank balance.
You are a professional, but I am an amateur.
The girl spent all her spare time to take after her invalid mother.
Only the embers of the bonfire remained.
We are giving away all our surplus apples.
餘的其他解释: