opaque background

• 不透明背景

opaque background的用法和样例：

例句

1. Control determines whether the label had a transparent background.
   属性确定标签是否有透明背景。
2. Tiles needed to be designed as diamond-shaped bitmaps, usually with a color-keyed background.
   图素首先要设计成菱形，其次要定义透明背景关键色。