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 |
| 例句 |
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？ |
| 随便看 |
英语例句辞典收录519880条英汉例句词条，基本涵盖了全部常用单词的造句方法及例句，是英语学习的有利工具。