Violanthrole
二苯并羟蒽
🗣️ 情景例句
We talked about that earlier.
我们先前谈过这个问题。
Competition between bidders for this valuable painting has been keen.
拍卖时各出价对这幅名画竞争很激烈。
He has been there for six months.
他在那儿已经住了6个月了。