opacity
/oʊˈpæsəti/
the phenomenon of not permitting the passage of electromagnetic radiation
中文释义: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。