Heptacene
[化] 并七苯
🗣️ 情景例句
Remember when you and your dad and I
还记得你 你爸爸 和我
It's an honor to be speaking to you today.
今天跟你们说话至感荣幸。
For one agonizing moment, the dish was perched precariously on the bank of the canal, but it suddenly overbalanced and slid back into the water.
在令人忐忑不安的瞬间，盘子晃晃悠悠地上了岸，但它突然失去了平衡，又跌回水中。