a poisonous white crystalline alkaloid,C23H26N2O4,derived from the seeds of nux vomica and closely related plants and used to denature alcohol是什么意思_a poisonous white crystalline alkaloid,C23H26N2O4,derived from the seeds of nux vomica and closely related plants and used to denature alcohol在线翻译_英语_读音_用法_例句