Ethanal
乙醛
🗣️ 情景例句
No, it's Ok.
不用， 没有关系 。
Are you crazy?
你疯了吗？
Fortunately, nothing was found and five hours later we were able to take off again.
幸运的是，什么也没有找到。5个小时后，我们又起飞了。