laborious [ləˈbɔ:riəs]

以下由轻松背单词网站提供

adj.吃力的，努力的，不流畅，勤劳的

needing a lot of time and effort

They had the laborious task of cutting down the huge tree. 他们接受了伐大树的艰苦工作。
Ants and bees are laborious insects. 蚂蚁与蜜蜂是勤劳的昆虫。