If you describe a task or job as laborious, you mean that it takes a lot of time and effort.
例句
Keeping the garden tidy all year round can be a laborious task.一年到頭把花園拾掇得干凈整潔也不是件輕松活兒。
英漢詞典釋義
adj.
勤勞的;困難的, 費(fèi)力的
They had the laborious task of cutting down the huge tree.他們接受了伐大樹(shù)的艱苦工作。
英英詞典釋義
Adjective
1. characterized by toilsome 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"