In transport the equivalent of a smart meter is a vehicle's on-board unit.
在交通运输领域，相当于一块智能电表的是汽车上的一个车载单元。
The elementary unit of length is the "meter", it's common knowledge.
长度的基本单位是“米”，这是常识。
Each unit has its own electrical and gas meter.
每个单位都有自己的电力和煤气表。
Each unit has its own electrical and gas meter.
每个单位都有自己的电力和煤气表。
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