laborious russian
трудоёмкий
labour-intensive, laborious
трудоёмкость
labour-intensiveness, laboriousness
вы́мученный
forced, laborious, laboured, ponderous
копотли́вый
slow, sluggish, laborious
labour-intensive, laborious
labour-intensiveness, laboriousness
forced, laborious, laboured, ponderous
slow, sluggish, laborious