duplicate indicator

• 复制显示器

duplicate indicator的用法和样例：

例句

1. He talks about economic growth as a great indicator for freedom, I agree with him.
   他论及经济增长是自由的一个有力的显示器，我同意。
2. Clear the dark blot on the indicator with the soft cloth or cotton paper.
   清除显示器上的污渍请用软布或棉纸。