Euxanthone
[化] 优┷吨酮; 1,7-二羟(基)-9-氧杂蒽酮(请比较flavone黄酮)
🗣️ 情景例句
It is great.
的确是太好了。
I'm sorry. Am I keeping you awake?
对不起。我吵得你睡不着了吗？
The Officer went through the case with great care.
那位官员十分仔细地把箱子检查了一遍。