'I have come,' she said at last, 'to dedicate my lamp to the sky.'

最后她说：“我来是要把我的灯献给上天。”

youdao

Though costlier, xenon allows a discharge lamp to start far more quickly.

尽管成本高，氙气能够迅速启动发电灯管。

youdao

Even though you save on kerosene, it takes more than three years after purchase for the total cost of running a compact fluorescent lamp to drop below that of a kerosene lamp and fuel.

如果不用煤油灯，节省下来的灯油钱，要三年才抵得上购买一个紧凑型灯的花费。

youdao

She demanded that Nate give her the lamp to hold so that he could have all the light he needed to help Maudie.

VOA: special.2010.01.09

So, if you use a black lamp or something and you excite something up to a higher energy level and then it relaxes back down to its lower energy state, it's going to emit a new wavelength of light, which is going to be visible to you.

如果你用一个紫外灯或别的,东西把某种分子激发到,更高的能级，然后它会掉回,到低能级，它就会释放,一个新的波长的光,这个光是可见的。

麻省理工公开课 - 化学原理课程节选

So we can figure out the energy of each photon emitted by our UV lamp by saying e is equal to h c over wavelength.

所以我们可以计算出,每个从紫外光源射出的光子,也就是e等于h乘以c除以波长。

麻省理工公开课 - 化学原理课程节选

The group sets a small percentage of the cost of each lamp to go toward the volunteers.

CNN: 'Saving lives' with solar-powered lights

Once home, he has a battery-powered radio and uses a small kerosene lamp to pass time at night reading.

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IX, in contrast, uses fibre-optic strands to guide the light from its lamp to the individual holes in its star-masks.

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