noun 下载 🔗分享 镁 The chemical element (symbol Mg) with an atomic number of 12. It is a light, easily flammable, silvery-white alkaline earth metal. Examples : "The scientist used magnesium for the demonstration in the science lab. " 科学家在科学实验室的演示实验中使用了镁这种元素。 element substance chemistry material science 与AI对话词汇游戏阅读练习