Anthrazine
[化] 二蒽并[1,2-1',2']哒嗪
🗣️ 情景例句
I'm not upset at all.
一点也不。
We have drapes for the living room,but we need kitchen curtains.
我们有客厅窗帘，但是我们需要厨房窗帘。
Perhaps more than half a year.
大约半年多吧。