D. downlighting is used in informal meeting spaces and compact fluorescent pot lights are used where aesthetic considerations and higher light levels are required.

筒灯照明用于非正式会议空间，当有审美的考虑，而且需要较高强度的光照时，会使用小型荧光聚光灯。

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When a light particle,or photon, hits an electron, the electron jumps to a higher energy state.

VOA: special.2010.09.01

And instead of having the electron giving off energy as a photon, instead now the electron is going to take in energy from light and move up to that higher level.

与电子以光子形式施放能量不同,我们现在要从光中,获得能量到一个更高的能级。

麻省理工公开课 - 化学原理课程节选

So, what we would expect is that there is a relationship between intensity in kinetic energy because it was understood that however intense the light was, if you had a more intense light, it was a higher energy light beam.

光强和能量之间,应该有一定的关系,因为在我们的理解中,不管光强是多少，光的强度越大,光束能量越高。

麻省理工公开课 - 化学原理课程节选

Following the summer's seasonal manufacturing shutdowns, higher light-duty diesel product sales were offset by lower sales of heavy-duty diesel filters and substrates.

ENGADGET: Corning touts 1 billion Gorilla Glass devices: that's a lot of face-saving surfaces

But women who skipped breakfast altogether had a risk that was a startling five times higher than the light breakfast group.

BBC: Breakfast key to cancer risk

Sales of the existing line of trucks and SUVs have waned in recent months, and analysts say consumer demand for larger SUVs is declining in light of higher gasoline prices.

FORBES: GM's Bumpy Ride