单词：batteries
n a device that produces electricity; may have several primary or secondary cells arranged in parallel or series
n a collection of related things intended for use together
n a unit composed of the pitcher and catcher
n a series of stamps operated in one mortar for crushing ores
n the heavy fire of artillery to saturate an area rather than hit a specific target
n an assault in which the assailant makes physical contact
batteries的用法和样例：
例句
- Most torches work on two batteries.大多数电筒要用两节电池。
- I need new batteries for this phone.我需要为这个电话装新电池。
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