不透明物

例句：

1. 1. The glass is too transparent to see through.
   这玻璃太透明了，看不清楚。
2. 2. The paint on the wall is not opaque enough to hide the stains.
   墙上的油漆不够不透明，无法掩盖污渍。
3. 3. The texture of this fabric is opaque, making it difficult to see through.
   这种织物质地不透明，难以透视。