This could, argues Angel, reduce the amount of light reaching the Earth by two per cent.

安吉尔认为，这将使到达地球的光量减少2%。

youdao

Certain plant species won't flower if they sense too much light and some plants will only flower if they sense a specific amount of light.

某些植物种类如果感觉到了太多光就不开花，而有些只有感觉到了一定程度的光才会开花。

youdao

The new bulbs require less than half the electricity consumed by the conventional bulbs currently used to produce the same amount of light.

这种新灯泡的耗电量还不到目前用于生产相同亮度的传统灯泡的一半。

youdao

If dark matter particles exist, scientists say, they should be able to observe a small amount of light given off when they hit the nucleus of a xenon atom.

VOA: special.2009.07.21

So that's the important take-away message from this slide. If we think about these different types of lights, microwave light, if it's absorbed by a molecule, is a sufficient amount of frequency and energy to get those molecules to rotate. That, of course, generates heat, so that's how your microwaves work.

重要的信息，如果我们看看,这些不同种类的光，微波,如果被分子吸收，它的频率和能量可以,使分子转动,这当然的，会产生热量,这就是你们微波炉的工作原理。

麻省理工公开课 - 化学原理课程节选

They produce only a small amount of light.

VOA: special.2009.12.21

The researchers then measured the amount of light, or radiance, present in each unit of the grid.

FORBES: The Case for Keeping the Lights On

Using the least amount of light possible to get around helps avoid disturbing the body's circadian clock.

CNN: Sleep tips for the road-weary

Compact fluorescents use about one-third as much electricity as incandescent bulbs to produce the same amount of light.

ECONOMIST: Green homes