Anthanthrone
[化] 二苯并[cd,jk]芘-5,10-二酮
🗣️ 情景例句
It's John. Didn't you recognize my voice?
我是约翰。你没听出我的声音？
It seems doesn't understand.
看起来他好像不了解。
Well, I suggest you see some of our national parks.
那么，我建议你参观一下我们的国家公园。