Humans have been breaking through the sound barrier for decades, but what exactly does that mean?
几十年来,人类一直在突破音障,但这到底意味着什么呢?
单词 | break through the sound barrier |
释义 |
break through the sound barrier
原声例句
Life Noggin Humans have been breaking through the sound barrier for decades, but what exactly does that mean? 几十年来,人类一直在突破音障,但这到底意味着什么呢? |
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