The megaphone(microphone) makes the voice sound louder because it points sound waves in one direction and keeps them from spreading out in all directions.
B
暂无解析
Amythical(imaginary)creature,thedragonwasbelievedtohavelion'sclaws,scalyskin,andfierybreath.
Incalculatingthedailycalorierequirementsforanindividual,variationsinbodysize,physicalactivity,andageshouldbetakenintoaccount.
ThefuturesurvivalofthebaldeagleisstillanimportantAmericanecologicalconcern.
Somechildrendisplayanunquenchable难以抑制的curiosityabouteverynewthingtheyencounter.