密度 mìdù density
density; concentration
怎么记住“密度”: 密 secret + 度 degree = density.
汉字
用法
- Density - how tightly packed something is: 人口密度 (rénkǒu mìdù) population density, 骨密度 (bone density).
- Both physics (mass per volume) and everyday 'concentration per area/space.'
- Measurable/technical; pairs with 高/低/大/小.
例句
- 日本的人口密度很高。 Rìběn de rénkǒumìdù hěn gāo.Japan has a high population density.