名词
中文翻译：超音速
同义词：
['hypersonic', 'supersonic例句：1. The rocket reached hypersonic speeds before it touched down.（火箭在触地前达到了超音速。）']
例句：
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1. The rocket reached hypersonic speeds before it touched down.
火箭在触地前达到了超音速。
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2.The aircraft flew at supersonic speeds over the ocean.
飞机在海面上以超音速飞行。
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3. The sound of the jet engine was audible from miles away.
喷气发动机的声音从几英里外都能听见。