in battery

基本解释

China is already thought to have a lead in battery development and electric vehicles.
业界认为中国已经在蓄电池和电动车领域处于领先地位。
Runs on a built-in battery - an electrical impulse within the heart initiates each contraction.
由“内置电池”供能 —— 心脏内部的电脉冲信号能激活每一次肌肉收缩。
Interestingly enough, improvements in battery management technology have compounded the average user’s perception of this problem.
有意思的是，电池管理技术的改进也加深了普通用户在这个问题上的认识。

They are connected under the skin to another wire that leads to a small battery placed in the chest.
see people with them, and what happens here is it's supposed to be those noise cancellation headphones. All they do is they take in the ambient noise that's around it, and there's actually battery in the headphones, that then produces waves that are going to destructively interfere with that ambient noise.
我从来没有用过这个,但你会看到有人带他们,它们可以作为消噪音耳机,它们所做的就是采入,周围的随机噪声，耳机里面是，有电池的，然后它能产生和,随机噪声相干相消的声波。
麻省理工公开课 - 化学原理课程节选
Because whenever I tell this story now, people start saying, " "Oh, well the evil machines are busy using your body as a battery" or whatever it was in the movie, right?
因为现在我一讲这个故事，人们就会说，“邪恶的机器忙着把你的身体当电池“,不管电影是怎样刻画的了？
耶鲁公开课 - 死亡课程节选

With a built-in battery that lasts for approximately eight hours you can enjoy your music anywhere.
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