laborious in Russian
laborious in Russian
трудоёмкий
Requiring much physical effort; toilsome.
напряжённый
Requiring much physical effort; toilsome.
тру́дный
Requiring much physical effort; toilsome.
тяжёлый
Requiring much physical effort; toilsome.
утоми́тельный
Requiring much physical effort; toilsome.
кропотли́вый
Mentally difficult; painstaking.