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bat.ter.y ELECTRICAL DEVICEH5bAt7[r7i, $5bAt7L7in [C]a device that produces electricity to provide power for radios, cars, etc.电池an alkaline battery碱性电池a rechargeable/solar battery可充电/太阳能电池a battery-operated hair dryer使用电池的吹风机a battery-powered car使用电瓶供能的汽车This alarm clock takes two medium-sized batteries.这只闹钟使用两节中号电池。The toy costs ￡50--batteries not included (= not provided with it and must be bought separately).这个玩具售价50英镑，电池另售。I think the battery is dead/gone/(Br esp. of a car battery) flat (= has lost its power).我看电池（尤指汽车电瓶）没电了。
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