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\\\"
造句
用作形容詞(adj.)
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。
He has a laborious style of writing. 他的文筆不流暢。
Checking all the names was a slow, laborious job. 核對全部名字是件既慢又費勁的事。
常用短語
The laborious breathing necessary in high regions.