百货商店里的顾客问一位售货员手电筒电池在哪儿。
The department store customes asked a salesperson where the flashlight batteries were.
如果你的铅笔盒坏了、手电筒的电池没电了、或者你吃剩下了一些食物，你将如何处理这些东西？
If your pencil box is broken, the batteries in your flashlights run out, or you have some leftover food, how will you deal with these things?
电池也是一个手电筒，它可以提供十个小时的照明。
The battery is also a flashlight, and it can provide ten hours of light.
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