意思翻译
物质种类
相关相似waste matter───[环境]废物
conservation of matter───物料守恒
centre of masses───[力]质心；质量中心
class number───[数]类数；[计]分类号；[数]组数
class societies───阶级社会
class teacher───班主任；班级教师
classmate───n.同班同学
双语场合用语But these are merely lifestyle choices for the affluent middle-classes, a matter of aesthetics, and nothing to do with the real issues.───物质变化分为两大类：物理变化和化学变化。
英语场合用语延伸推荐- classes of matter
- classes google classroom