Parnanthracene
[化] 双蒽; 仲蒽; 聚二蒽
🗣️ 情景例句
How could I forget?
我怎么会忘呢？
Not at all.
一点儿也不。
Then the Class 2 runner dropped his stick on the ground when he was passing it on to the fourth runner.
忽然2班的运动员在传棒给第四个运动员时，把棒弄掉到了地上。