单支红色发光二极管表示电源已接通。
这条电线的电源是通过地下电缆传输的。
The electricity line is fed with power through an underground cable.
电源故障使一切陷入黑暗。
这些装置不应该接通电源。
他们关掉了电源。
你只需要一次性按下全部电源按钮。
你检查了电源插头并按下播放键了吗？
这个仪器的电源出故障了，不能再用了。
The power supply on this instrument had failed, so it could no longer be used.
我们终于接通了新电源。
电视让人们做的最困难的任务是在打开电视后把电源关掉。
The hardest task that television asks of anyone is to turn the power off after he has turned it on.
他们可能会有一个栖身之所，但里面没有电源供给、电话或管道设施。
They may have a home to shelter themselves but it does not have power supplies, a telephone or plumbing.
在更换电源之前，我们必须从望远镜上取下一个用四个螺丝固定的扶手。
Before we could replace the power supply, we would have to remove from the telescope a handrail fixed with four screws.
然后可以将氢气输入到存储系统中，并在需要附加或备用电源时用于发电。
The hydrogen gas could then be fed into a storage system and used to generate electricity when additional or backup power is needed.
是的，电源指示灯是亮的，机器也正在运行，但是不知怎么的声音就是出不来。
Yes, the power indicator was on, and it was running, but somehow the sound didn't come through.
苹果公司的每一款产品采用“过时”的内置设计，如果我的电源线丢了，另换一根就得向他们支付80美元。
Every Apple product has obsolescence built in, and if I lose my laptop's power cord, they charge me $80 for a new one.
这个剃须刀可用电池或电源驱动。
他们给磁带录音机接通了电源。
电的供应在电源处被切断。
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.
打印机接上电源没有？
那时我有一台电视机，但没有接通电源的插座。
混合动力汽车，不像纯电动汽车，从不需要接电源。
Hybrids, unlike pure electric cars, never need to be plugged in.
一些人担心电源线的电磁场可能增加患癌症的风险。
Some people are worried that electromagnetic fields from electric power lines could increase the risk of cancer.
电源开关的工作原理是让电流脉冲穿过触点和触面之间。
The switch works by passing a pulse of current between the tip and the surface.
如果你发现房间里着火了，你应该切断电源，马上离开房间。
If you find something on fire in the room, you should cut off the electricity and leave the house at once.
在美国，照明约占总耗电量的7%。由于照明通常远离电源——例如从发电厂到偏远公路上的路灯——因此大量的能源在传输过程中会损失掉。
Lighting accounts for about 7% of the total electricity consumed in the US. Since lighting is often far removed from the power source—such as the distance from a power plant to street lamps on a remote highway—a lot of energy is lost during transmission.
我意识到，扶手不会脱落，这意味着我们再也无法更换电源供应和维修仪器，这意味着科学家们再也无法观察宇宙，在其他星球上寻找生命。
I realized that the handrail would not come off, which meant we could no longer be able to replace the power supply and repair that instrument, which meant scientists could no longer look at the universe and find life on other planets.
像辅助电材料一样，它从热源处发电，从电源处制冷。
Like paraelectric materials, this generates electricity from a heat source and produces cooling from an electrical source.
在电源接口的功率传输中，电源接头可以实现安全带电插接。
The power supply connector can realize safe electriferous insertion in the power transmission of a power interface.
这些都不需要额外的费用，只需插入电源，选择所需的语言并调节音量即可。
There is no extra charge for these—just plug in, select the required language and adjust the volume.
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