Dihydroxyphthalophenone
酚酞
🗣️ 情景例句
Thank you.
谢谢 。
Did you go to the school last night?
你昨晚去学校了吗？
When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed.
不久前，一架轻型客机偏离了航线，在山区坠毁，飞行员丧生。