The hospital has an additional electricity supply standing by in case of a power failure.
医生另有一套供电设备以防万一停电时使用。
The well-off are less likely to moderate their consumption and hence will pay for additional electricity at the higher rates.
富裕的人比较不可能减少用电,所以必须缴交比较高的费用来使用更多的电力。
If the car needs more range, a gas engine kicks in to power a generator that creates additional electricity for the electric motor.
如果汽车需要更多的里程,燃气发动机就投入使用,产生额外的电能来驱动电机。
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