Benzanthrone
苯并蒽酮
🗣️ 情景例句
They concluded that the goods were of good quality and proved no problem.
他们断定货物质地优良，并证明没有任何问题。
That's very nice of you. I guess I could use some help.
谢谢你的好意。我想我可能要一点帮助。
'What has happened?' she asked.
“发生了什么事？”她问，