Phenaphthacridone
[化] 苯并萘吖啶酮
🗣️ 情景例句
What has kept you so busy?
什么使你这么忙？
After eating breakfast,I go back upstairs again.
在吃早餐以后，我再回楼上。
The 'taxi' is a small Swiss aeroplane called a 'Pilatus Porter'.
这辆“出租汽车”是一架小型瑞士飞机，叫“皮勒特斯。波特“号。