Hexaphene
[化] 己芬; 萘并[2,3-a]并四苯
🗣️ 情景例句
Please, after you.
你先请。
I just dropped in to say goodbye.
我只是来告别的。
After making a short test flight at 4,15 a.m.,
布莱里奥凌晨4点15分作了一次短距离试飞，