strenuous

effort soutenu

Indicates a great deal of effort or determination.

Indique beaucoup d'effort ou de détermination.

Refers to intense physical exercise.

activité intense

Refers to any activity that requires a lot of physical effort.

Désigne toute activité qui demande beaucoup d'effort physique.

entraînement ardu

A very demanding session of physical exercise.

A long and difficult walk, especially in the countryside or mountains.

Refers to the use of a great deal of physical or mental energy.

marche ardue

A walk that is physically demanding.

Une marche qui demande beaucoup d'effort physique.

randonnée ardue

A long, hard journey, typically on foot.

une randonnée qui demande un grand effort physique

A very strong and forceful expression of disapproval or opposition.