characterized by effort to the point of exhaustion; especially physical effort;
"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"
例句
用作形容词(adj.)
Her work is a laborious task.她的工作很艰苦。
Cleaning the forest is a laborious business.清理树林是份艰苦的差事。
He has a laborious style of writing.他的文笔不流畅。
Checking all the names was a slow, laborious job.核对全部名字是件既慢又费劲的事。
