Vacuum cavity
[医] 真空腔
🧩 词语组成解析
🗣️ 情景例句
Please don't do it without asking.
未经允许请不要那么做。
When did you graduste?
你什么时候毕业的？
As soon as he had got into the car, I said good morning to him in French and he replied in the same language.
他一上车，我就用法语向他问早上好，他也同样用法语回答我。