Comets are still regarded with awe by some people.
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Batsfly,ratherthanglide,andthusaretheonlymammalscapableoftrueflight.
Creamoftartar酒石,aweakacid,canbeaddedtoeggwhitestohelpthemfoam泡沫whentheyarebeaten
Solidgeometryhasenabledastronomerstocalculatethepositionsoftheheavenlybodiesrelativetooneanother.
Withtheacquisitionofsmallercompaniesbylargerones,the1960'ssawawaveofnewconglomerates.
TheSalkvaccineisamajorfactorinthefighttoeradicatepolio.
