Somechildrendisplayanunquenchable难以抑制的curiosityabouteverynewthingtheyencounter.
In1974HenryAaronbrokeBabeRuth'smonumentallifetimerecordof714homeruns.
Incalculatingthedailycalorierequirementsforanindividual,variationsinbodysize,physicalactivity,andageshouldbetakenintoaccount.
Formulatedin1823,theMonroeDoctrineassertedthattheAmericaswerenolongeropentoEuropeancolonization.
Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.