Pyrazolinium
二氢化吡唑
🗣️ 情景例句
How's the parade?
行怎么样
Falling leaves
落叶
He asked if Mr.Gilbert's operation had been successful and the doctor told him that it had been.
他问吉尔伯特先生的手术中否成功，医生告诉他手术很成功。