density

/ˈdɛnsɪti/

the amount per unit size

Chinese meaning: 密度；浓度；稠密

The population density in urban areas is much higher than in rural regions.

城市地区的人口密度远高于农村地区。

The density of the material determines whether it will float or sink.

材料的密度决定了它是浮还是沉。