形容词
中文翻译：超音速的
同义词：
['hypersonic', 'supersonic例句：1. The aircraft flew at an infrasonic speed.（飞机以超音速飞行。）2. The sound of the explosion was so loud that it could be heard over the infrasonic roar.（爆炸声如此之大，以至于可以听到它超过超音速的轰鸣声。）']
例句：
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1. The aircraft flew at an infrasonic speed.
飞机以超音速飞行。
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2. The sound of the explosion was so loud that it could be heard over the infrasonic roar.
爆炸声如此之大，以至于可以听到它超过超音速的轰鸣声。
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3.The physicist used a special device to measure the temperature of the infrasonic waves.
物理学家使用一种特殊的装置来测量超音速波的温度。