形容词古费力的，困难的，辛勤的

形容词

1. What an operose method!
多么费事的方法呀！

1. 费力的：opern 歌剧 | operose 费力的 | ophicleide 金管乐器

2. 用功的：operon 相似的一群遗传因子 | operose 用功的 | operosepainstaking 勤勉的

3. 费力的,用功的：golbose 球形的 | operose 费力的,用功的 | verbose 冗长的

4. 费力的/吃力的/勤勉的/用功的：operon /相似的一群遗传因子/ | operose /费力的/吃力的/勤勉的/用功的/ | ophiasis /匐行性脱发/

adj

1. characterized by effort to the point of exhaustion
especially physical effort

e.g. worked their arduous way up the mining valley
a grueling campaign
hard labor
heavy work
heavy going
spent many laborious hours on the project
set a punishing pace

Synonym: arduousbackbreakinggruelinggruellinghardheavylaboriouspunishingtoilsome