Technological advancements are making previously arduous labor less difficult and thus altering energy expenditure that would have helped offset the caloric increases in the diet.
The service was arduous and called for both energy and good seamanship.
Subordinating himself to men of lower rank, he was attached to a squadron as a pilot and saw continuous and arduous service through the offensive.
The tasks of such an ecclesiastical university are to prepare students for pastoral ministry, teaching, and the more arduous tasks of the apostolate.
The journey was arduous, through rough country and with constant exposure to accidents and unfamiliar disease.