Usages of whereas
Heating uses natural gas, whereas air conditioning needs electricity.
La calefacción usa gas natural, mientras que el aire acondicionado necesita electricidad.
These LED bulbs are energy-efficient, whereas those lamps waste electricity.
Estos focos led son de bajo consumo, mientras que esas lámparas desperdician electricidad.
The meter shows energy use, whereas the air leak wastes electricity.
El medidor muestra el consumo de energía, mientras que la fuga de aire desperdicia electricidad.
We use solar panels, whereas they use natural gas.
Usamos paneles solares, mientras que ellos usan gas natural.
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