Not allowing light to pass through; not transparent; not shining or lustrous.

不透光的；不透明的；无光泽的。

Dark; obscure.

幽暗的；朦胧的。

Unintelligible.

难解的；愚笨的。

Obtuse; dull-witted.

迟钝的；愚笨的。

Not allowing electricity, heat, etc. to pass through.

不导电的；隔热的。

That which will not allow light to pass.

不透光之物。