a device that measures the amount of something that is used

The electricity meter is in the basement. 电表在地下室。

You'll need some change for the parking meter. 你需要些零钱付计时停车费。

A man came to read the meter (= see how much gas had been used). 有人来抄表了。

the device in a taxi that measures the distance or the amount of time spent travelling and shows how much you have to pay

The cab driver left the meter running while I helped Mum to her front door. 我扶妈妈下车走到前门口这段时间，出租车司机一直开着计价器。

to use meters to measure how much gas, electricity, or water is used

Britain's water companies are planning to meter water consumption. 英国的自来水公司正计划计量水的用量。