El motor del coche estaba funcionando a medio gas, por eso no alcanzaba mucha velocidad.
The car's engine was running at half throttle, so it didn’t reach much speed.
Durante la prueba, la máquina giraba a medio gas para evitar sobrecalentamientos.
During the test, the machine ran at reduced power to avoid overheating.
El barco navegaba a medio gas porque tenían que conservar combustible para el viaje largo.
The boat sailed at half power because they had to conserve fuel for the long trip.
La caldera estaba encendida a medio gas mientras esperaban que aumentara la demanda de vapor.
The boiler was running at partial throttle while they waited for the steam demand to increase.
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