Davidigenin
二羟苯基羟基丙酮
🗣️ 情景例句
Grandpa! Grandpa!
爷爷！ 爷爷！
It is an ill bird that fouls its own nest.
家丑不可外扬。
He opened it and saw the man from downstairs.
他打开门，看见楼下人。