不透明表面
先理解核心含义，再看它在真实句子里的用法。
不透明表面
a surface that does not allow light to pass through, thus not reflective
The mirror is a reflective surface, while the wall is an opaque surface.
镜子是反射表面,而墙壁是不透明表面。
不透明表面
a surface that does not allow light to pass through, thus not reflective
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Dictionary facts from AI_SUPPLEMENT.