余

游刃有余

yóu rèn yǒu yú

handling a butcher's cleaver with ease (idiom); to do sth skillfully and easily

闲余

xián yú

(of one's time) idle; unoccupied

双曲余割

shuāng qū yú gē

hyperbolic cosecant, i.e. function cosech(x)

双曲余弦

shuāng qū yú xián

hyperbolic cosine or cosh (math.)

余下

yú xià

remaining

余光

yú guāng

(out of) the corner of one's eyes

余切

yú qiē

cotangent (of angle), written cot θ or ctg θ

余剩

yú shèng

surplus

余割

yú gē

cosecant (of angle), written cosec θ or csc θ

余力

yú lì

energy left over (to do sth else)

余勇可贾

yú yǒng kě gǔ

lit. spare valor for sale (idiom); fig. after former successes, still ready for more work

余味

yú wèi

aftertaste