strenuous

多大な努力

Indicates a great deal of effort or determination.

多大な努力や決意を示します。

Refers to intense physical exercise.

激しい活動

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

多くの身体的努力を必要とするあらゆる活動を指します。

激しい運動

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.

きつい散歩

A walk that is physically demanding.

多くの体力を必要とする散歩。

精力的なトレッキング

A long, hard journey, typically on foot.

大きな身体的努力を必要とするトレッキング

A very strong and forceful expression of disapproval or opposition.