opacity

/oʊˈpæsəti/

the phenomenon of not permitting the passage of electromagnetic radiation

Chinese meaning: 不透明性；不透明度

The opacity of the glass can be adjusted to provide more privacy.

玻璃的不透明度可以调节，以提供更多隐私。

High opacity in paint means it covers the surface with fewer coats.

油漆的高不透明度意味着用更少的涂层就能覆盖表面。