ThefuturesurvivalofthebaldeagleisstillanimportantAmericanecologicalconcern.
A、migrationWhencarbonisaddedtoironintheproperproportions,theresultissteel.
Thecontrolsofmostmodernairplanescanbeoperatedeithermanuallyorautomatically.
Somechildrendisplayanunquenchable难以抑制的curiosityabouteverynewthingtheyencounter.
Someanimalspantandsweattospeedevaporationofbodymoistureandthuscoolthemselves.
Some cosmetics manufacturers attempt to capture the rose's unmistakable fragrance香味 in soaps and perfumes.
