laborious
/ləˈbɔːrɪəs/adjective
1- (especially of a task, process, or journey) requiring considerable effort and time（尤指任务、过程或旅行）费时费力的：
years of laborious training
数年的艰苦训练
the work is very slow and laborious.
工作进展很缓慢, 很费力。
1.1
- (especially of speech or writing style) showing obvious signs of effort and lacking in fluency（尤指讲话, 写作风格）造作的, 不流畅的：
his slow laborious style.
他拖沓、不流畅的风格。
派生词
laboriously
adverblaboriousness
noun词源
late Middle English （also in the sense 'industrious, assiduous'）： from Old French laborieux, from Latin laboriosus, from labor 'labour'.