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arduous
01
ciężki
requiring so much effort, mostly physical, that will cause exhaustion
02
ciężki
taxing to the utmost; testing powers of endurance
03
ciężki
requiring vigorous effort, particularly on a continuous basis
Przykład
The soldiers endured an arduous march through rough terrain.
The climb up the mountain was an arduous task for the hikers.
Building the house from scratch was an arduous undertaking.
Preparing for the marathon proved to be an arduous training routine.
He found the task of moving all the furniture an arduous chore.
