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Indicator
01
转向指示灯, 信号灯
a light on a vehicle that blinks to indicate a change in lane
02
指标, 信号
something that is used to measure a particular condition or value
Example
The decrease in unemployment rates is a promising indicator of economic recovery.
03
指示器, 显示装置
a device for showing the operating condition of some system
04
指示剂, 指示物
a substance used for determining the condition of a solution by changing into different colors
Example
The color change of the indicator confirmed the presence of an acidic solution.
