Incalculatingthedailycalorierequirementsforanindividual,variationsinbodysize,physicalactivity,andageshouldbetakenintoaccount.
A、numberedDespite the proliferation of other faster modes of transportation, the railroads remain the largest carriers of intercity freight in the United States.
Someanimalspantandsweattospeedevaporationofbodymoistureandthuscoolthemselves.
TheSalkvaccineisamajorfactorinthefighttoeradicatepolio.
How many people are aware that a dancer with the New York City Ballet typically wears out a minimum of two hundred pairs of toe shoes per year?
With lasers scientists can probe many physical processes, such as combustion, once beyond our ken.视野
