The Salk vaccine is a major factor in the fight to eradicate polio.
A、completelydestroyA
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Incalculatingthedailycalorierequirementsforanindividual,variationsinbodysize,physicalactivity,andageshouldbetakenintoaccount.
Thefirstpaperwasmadefromthebarkofthemulberrytree.
MaryMcCarthyssatires諷刺文學arecouchedinaprosestylethathasaclassicprecision.
Insectpestsareamongtheleadingcausesofcropfailure.
Solidgeometryhasenabledastronomerstocalculatethepositionsoftheheavenlybodiesrelativetooneanother.
