The first example, in Figure7, shows a high contrastscreen with all the entries having lost their color.
图7中的第一个例子显示了一个高对比屏幕，所有条目的颜色都消失了。
2
Contrast ratio: a number ratio resembling 1:1 or 10, 000:1, which illustrates how much difference there is between the brightest whites and the darkest black colors the screen can display.
对比度：一个比值，如1：1或10,000：1，代表屏幕所能表现出的最亮白色和最深黑色之间的差值。
3
Letters and other characters on the screen are formed out of ink that has a high optical contrast with the background, making them easy to read.