Translation of "strenuous" into Danish

When we engage in strenuous exercise our spleen contracts to supply the muscles with extra blood.

Når vi udfører anstrengende arbejde trækker milten sig sammen for at forsyne musklerne med ekstra blod.

Though the work was strenuous and the hours were long, a willing and happy spirit prevailed.

Selv om arbejdet var hårdt og arbejdstiden lang, herskede der en villig og glad ånd.

For one thing, housework can be strenuous, taxing work for a mother.

Det huslige kan være anstrengende og opslidende for en mor.