adj.艱苦的；費(fèi)勁的
Her work is a laborious task. 她的工作很艱苦。
Cleaning the forest is a laborious business. 清理樹林是份艱苦的差事。
Checking all the names was a slow, laborious job. 核對(duì)全部名字是件既慢又費(fèi)勁的事。
adv.艱難地；辛勤地
