In another few hours the devilfish would have a "flat can" no battery juice left.
不消两三个钟点，“乌贼号”就会剩下个“空电池”，一点电也没有了。
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However, you need to buy a new one once the battery life flat.
不过，您需要购买一个新的，一旦电池寿命单位。
My car battery is flat.
我车的电池没电了。
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