laborious
adjective
UK/ləˈbɔː.ri.əs/
US/ləˈbɔːr.i.əs/
Definitions of laborious adjective
requiring considerable time and effort
耗時費力的；艱鉅的；費勁的
This is a laborious task that demands a lot of time and effort.
這是一項耗時費力的任務，需要大量的時間和精力。
The research was a laborious process that required years of dedicated effort.
這項研究是一個耗時費力的過程，需要多年的專注努力。
Digging the foundation by hand without proper tools is an extremely laborious undertaking.
沒有適當的工具，徒手挖掘地基是一項極其艱鉅的工作。