Cream of tartar 酒石 , a weak acid, can be added to egg whites to help them foam泡沫 when they are beaten
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Solidgeometryhasenabledastronomerstocalculatethepositionsoftheheavenlybodiesrelativetooneanother.
Batsfly,ratherthanglide,andthusaretheonlymammalscapableoftrueflight.
Communicationisoneofthemostimportantbondsthatholdculturalsystemstogether.
EllaGrasso,electedgovernorofConnecticutin1974,supportedtheenactment(given,granted)ofafreedom-of-informationlaw.
Thewheelsofthefirstroadvehicleswerefashionedfromcrudestonedisks.