the act or result of filling a thing or place completely so that no more can be added

market saturation 市场饱和

The airport is approaching saturation with more than 20 million passengers per year. 该机场正接近饱和，每年有超过 2000 万乘客。

The theme park industry has already reached its saturation point. 主题公园行业已经达到饱和点。

the act of making something or someone completely wet

Saturation of the soils is greatly increased by any increased level of the lake. 土壤的饱和度随着湖水水位任何程度的升高而大大增加。

the degree to which something is dissolved in something else, compared with the maximum possible degree

As the degree of saturation increases, the oil progresses towards being fully hydrogenated. 随着饱和程度上升，油朝着完全氢化的方向变化。

His blood oxygen saturation should be between 98 and 100. 他的血氧饱和度应该在98和100之间。