这个剃须刀可用电池或电源驱动。
这些电池的设计防渗漏，且密封性强。
The batteries are designed to be leak-proof and hermetically sealed.
手册里没写它要每天开，给电池充电。
There was nothing in the brochure about having to drive it every day to charge up the battery.
电池的使用寿命是6小时。
该充电器可在约25分钟内完成给电池充电。
有些型号的电池在接入直流电源时就能充电。
Some kinds of batteries can be recharged by connecting them to a source of direct current.
每次看手表的时候，她都会想是不是电池没电了。
Every time she consulted her watch, she wondered if the batteries were wearing out.
据说，“飞轮”电池每充电一次可驱动一辆电动汽车行驶600英里。
The "flywheel" battery, it is said, could power an electric car for 600 miles on a single charge.
如果他们成功了，那么就不再需要电池。
直到电池有所改善，它们才变得流行起来。
They did not become popular until the emergence of improved batteries.
一个利用电池供电来运行的世界也有其自身的风险。
当需要全功率激增时，拖船可以从电池获得额外的电力。
The tugboat could draw extra power from the battery when full-power surges were needed.
电池存储容量的大幅提升使其更有可能保持全天候供电。
A boost in the storage capacity of batteries is making their ability to keep power flowing around the clock more likely.
长期以来，科学家和工程师们都相信电池能够改变世界。
Scientists and engineers have long believed in the promise of batteries to change the world.
旧电池即使没用了也不能随意丢弃，因为它们会污染环境。
Old batteries can't be discarded casually even when they are no longer useful, because they'll pollute the environment.
但是，电池存储容量的大幅提升使其更有可能保持全天候供电。
But a boost in the storage capacity of batteries is making their ability to keep power flowing around the clock more likely.
电池已经开启了一场通讯革命，现在正准备改变几乎所有东西。
Having already enabled a communications revolution, the battery is now poised to transform just about everything else.
激光瞄准安装在鹈鹕下面的光伏电池，给直升机的电池充电，使它在空中飞行了12小时27分钟。
The laser at photovoltaic cells mounted on the pelican's underside, charged the chopper's battery, keeping it aloft for 12 hours and 27 minutes.
他们上课的时候电池正在充电。
有害垃圾包括药品和电池等东西。
谷歌眼镜内含电池，放置在镜框内。
Google Glass is a pair of glasses with a battery hidden inside the frame .
另一个问题是找地方给电池充电。
Another problem is finding a place to recharge the batteries.
常见的太阳能电池板的问题是什么？
每天，孩子们把电池放进学校太阳能奶牛的底部。
Every day, children put their batteries into the bottom of their school's Solar Cow.
问题是汽车的电池需要充电。
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