Destructive vibration
[化] 破坏性震动
🧩 词语组成解析
🗣️ 情景例句
It's about the size of the United States, but it has a population of only 16.5 million.
它和美国一般大，但人口却只有一千六百五十万。
Open your books and turn to page 20.
打开书，翻到第20页。
There are many things to be learnt when you start working.
开始工作时，你有许多东西要学。