Acridanyl
二氢化吖啶基
🗣️ 情景例句
He's stepped out of the office for a little while.
他离开办公室刚一会儿。
If you want to be healthy, you have to stop smoking cigarettes.
如果你要身体健康的话，必须停止抽香烟。
Opportunity knocks but once.
机不可失，时不再来。