Pericondensed polycyiclic
[建] 包缩合多环物的
🗣️ 情景例句
What's the matter?
到底发生了什么事？
I woke up seven and got up right away.
我七点醒了，然后马上起床了。
The doctors removed a section of the mummy and sent it to a laboratory.
医生们从木乃伊身上取下一个切片，送去化验。