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strenuous
01
faticoso
(of actions or efforts) determined and energetic
02
laborioso
requiring a lot of physical or mental effort
Esempio
The plan has faced strenuous opposition.
The company put forth strenuous efforts to meet the project deadline.
She made strenuous attempts to complete the marathon.
Despite strenuous efforts, the ship went down.
He avoids strenuous exercise due to his heart condition.
