Someanimalspantandsweattospeedevaporationofbodymoistureandthuscoolthemselves.
TheSalkvaccineisamajorfactorinthefighttoeradicatepolio.
Themegaphone(microphone)makesthevoicesoundlouderbecauseitpointssoundwavesinonedirectionandkeepsthemfromspreadingoutinalldirections.
Amythical(imaginary)creature,thedragonwasbelievedtohavelion'sclaws,scalyskin,andfierybreath.
Withlasersscientistscanprobemanyphysicalprocesses,suchascombustion,oncebeyondourken.视野
Withtheacquisitionofsmallercompaniesbylargerones,the1960'ssawawaveofnewconglomerates.