WHEN cars run on electric power they not only save fuel and cut emissions but also run more quietly.
电动汽车不仅节省能源，降低尾气排放，而且开动起来也更加安静。
It shows that a modest dose of air power can save lives; but also that the rhetoric of civilian protection can be stretched to justify a creeping mission.
这表明适度的空中打击可以拯救生命；与此同时，保护平民的雄辩言辞可以扩大成为秘密行动的辩护词。
This article analyses the loss of power of electric motor, and tells that pressure and speed adjustment of the pump not only save energy but also not lead to over heated of the electric motor.
分析电动机功率损耗，阐述了泵类负载调压调速不仅可以大幅度地节能，而且不会造成电机过热。
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