Parnanthracene
[化] 双蒽; 仲蒽; 聚二蒽
🗣️ 情景例句
Brandy, please.
白兰地。
Don't touch it!
不许碰！
a flight attendant told us to keep calm and to get off the plane quietly as soon as it had touched down.
一位空中乘务员告诉我们要保持镇静，待飞机一着陆，就马上不声不响地离开飞机。