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1·I bought a spare battery.

我带备用电池了。

2·I hope you brought another torch or a spare battery.

我希望你多带了一只手电筒或备用电池。

3·Other intelligent mobile phone unless you got a spare battery or battery.

其他智能手机除非你准备了备用电池或外挂电池。

4·I hope you brought another torch or a spare battery. This one's at its last gasp.

我希望你多带了一只手电筒或备用电池。这个手电筒的电池快用完了。

5·The main control computer chip is connected with a spare battery to enable the system to work as before during power failure.

主控电脑芯片同时还接有一电池，作为备用电，使得本系统在停电时依旧工作。

6·This approach allows you to pop in a fresh spare when your battery runs out of juice between charges, and to easily replace a battery when its lifespan is over.

这样当你电池耗尽又未能及时充电的时候就可以换上一块新电池，电池寿命耗尽的时候也可以轻松更换。

7·The Droid’s battery gets you through one day, just like the iPhone’s, but you can carry a spare.

Droid 的电池可以让你用上一天，跟 iPhone 一样，但是，不同的是你可以带一块备份电池。

8·Spare lithium battery is prohibited checked, can only carry on.

备用锂电池严禁托运，只能随身携带上机。

9·Mobile power supply (Charge Pal): It is regarded as spare lithium battery and can only be carried in hand baggage.

移动电源（充电宝）：视为备用锂电池，乘机时只能随身携带。

10·Short circuit protection should be well handled on every single Spare lithium battery, moreover, only 2 spare lithium batteries are allowed per person.

携带备用锂电池必须单个做好保护以防止 短路，且只允许每人在手提行李中携带2 块备用电池。