Benzanthrone
苯并蒽酮
🗣️ 情景例句
If we're all prepared to recycle paper, thousands of trees could be saved every day.
如果纸能被循环利用，那么每天千千万万的树木就可得以挽救。
What do you like to do in your spare time?
空闲时你喜欢干什么？
In his twenties Frank used to make spare parts for aeroplanes.
20多岁的时候，弗兰克曾生产飞机零配件。