Dioxadiazole
二恶二唑
🗣️ 情景例句
I always eat three square meals a day.
我总是每天三顿饭都好好吃。
All our work was in vain.
我们白干了一场。
Once the existence of this wave-length had been discovered,
一旦这种波长的实际存在被发现，