In1974HenryAaronbrokeBabeRuth'smonumentallifetimerecordof714homeruns.
A、archaic(old,antique)Formerly,intheUnitedStates,manynursesworkedasprivatedutynursesratherthaninhospitals.
Anoversight遗漏(miss,overslaugh)inproofreadingoftenresultsinprintederrors.
Alligatorsstillexistinsomeofthedank潮湿swampsandbayous小海湾ofAlabama'scoastalregions.
ThefuturesurvivalofthebaldeagleisstillanimportantAmericanecologicalconcern.
TheNativeAmericaninterpreterSacajaweawasavaluablememberoftheLewisanddarkexpeditionin1805.
