Pyrophthalone
吡啶基茚二酮
🗣️ 情景例句
What is your cancellation policy?
我怎么退票？
A wise man will make tools of what comes to hand.
聪明的人能随机应变。
For small pieces of weather -- and to a global forecaster,
对于小片的恶劣天气--对一个全球性的气象预报员来说，