ThefuturesurvivalofthebaldeagleisstillanimportantAmericanecologicalconcern.
Alligatorsstillexistinsomeofthedank潮湿swampsandbayous小海湾ofAlabama'scoastalregions.
Whencarbonisaddedtoironintheproperproportions,theresultissteel.
Solidgeometryhasenabledastronomerstocalculatethepositionsoftheheavenlybodiesrelativetooneanother.
Urbanrenewalprogramsstrivetoupgradeareasthatarebecomingslums.
MaryMcCarthyssatires讽刺文学arecouchedinaprosestylethathasaclassicprecision.