지표, 척도, 기준
A trend, fact, or statistic that reveals the state or level of something, often used as a benchmark or measure.
예문:
"The unemployment rate is a key indicator of overall economic health."
"Student attendance serves as an important indicator of school engagement and motivation."
"The company's quarterly profits were a strong indicator of market recovery."
표시기, 지침, 계기
A physical device, such as a gauge, meter, or display, that shows a reading, measurement, or status of a machine or system.
예문:
"The pressure indicator on the boiler was fluctuating wildly, signaling a potential malfunction."
"She checked the fuel indicator before starting the long drive across the desert."
"The digital indicator displayed the exact temperature inside the reactor chamber."
방향등, 깜빡이
A flashing light on a vehicle used to signal an intention to turn or change lanes; a turn signal.
예문:
"Always use your indicator well in advance when merging onto the highway."
"The driver failed to switch off the indicator after completing the turn."
"He noticed the rear indicator was broken after a minor collision."
지시약, 시약
A chemical compound that changes color in response to changes in pH or the presence of a specific substance, used to monitor chemical reactions.
예문:
"Litmus paper contains an indicator that turns red when exposed to acid."
"The chemist added a few drops of the phenolphthalein indicator solution to the titration flask."
"The color change of the indicator marked the endpoint of the reaction."
지표종, 환경 지표
An animal or plant species whose presence, absence, or abundance can be used to infer specific environmental or habitat conditions.
예문:
"Lichens are often used as biological indicators of air quality because they are sensitive to pollutants."
"The sudden decline of the indicator species signaled severe pollution in the river ecosystem."
"Monitoring the population of this specific insect provides reliable data on forest health."