indicator

中文意思

• n. 指示器
• n. 指标
• n. 指示剂

英文释义

• n. a signal for attracting attention
• n. a device for showing the operating condition of some system
• n. (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

词形变化

复数

indicators

例句

1. n. 指示器

   The red light on the dashboard is an indicator that the car's battery is low.

   仪表盘上的红灯是一个指示器，表明汽车电池电量低了。

2. n. 指标

   Unemployment rate is a key economic indicator used to measure the health of a country.

   失业率是用来衡量一个国家健康状况的关键经济指标。

3. n. 指示剂

   The chemical indicator turned pink when added to the alkaline solution.

   这种化学指示剂加入到碱性溶液中时变成了粉红色。