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
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Some cosmetics manufacturers attempt to capture the rose's unmistakable fragrance香味 in soaps and perfumes.
HowmanypeopleareawarethatadancerwiththeNewYorkCityBallettypicallywearsoutaminimumoftwohundredpairsoftoeshoesperyear?
MaryMcCarthyssatires讽刺文学arecouchedinaprosestylethathasaclassicprecision.
Solid geometry has enabled astronomers to calculate the positions of the heavenly bodies relative to one another.