Phenacetol
苯氧基丙酮
🗣️ 情景例句
He never speaks unless he is spoken to.
除非别人先对他开口，他从不先开口。
How long does it take for a letter to get to California ?
一封信到加利福尼亚要花多长时间？
Just pencil in the changes and we'll retype it.
修改的地方请用铅笔，我们会重打。