indicator-主題

indicator

['indikeitə]

n.指示器, 指示劑, 指示牌 
[計算機] 指示符

例句與用法：

He talks about economic growth as a great indicator for freedom, I agree with him.

他論及經濟增長是自由的一個有力的顯示器，我同意。

An indicator or a sighting apparatus on a plane table, used in angular measurement.

旋標裝置飛機控制板上的指示器或觀測儀，用來測量角度

英文解釋:

名詞 indicator:

a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time

同義詞：index, index number, indicant

a signal for attracting attention

a device for showing the operating condition of some system

(chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction

以上來源於大辭典