选择一种背景颜色，把网页中其它颜色显现出来，这就是透明度。
One color can be selected to be the background color which allows the underlying page color to show through. This is called transparency.
当叶绿素耗尽时，在整个夏季被它主导的其他颜色开始显现。
As chlorophyll is depleted, other colours that have been dominated by it throughout the summer begin to be revealed.
例如，昆虫能够看到极光——光对它们来讲会根据从不同的表面反射的不同角度而显现出不同的颜色。
For example, insects can see polarised light - light to them appears as different colours, depending on the Angle at which reflects off different surfaces.
应用推荐