大部分的时间里激光是暗的，产生低强度的光区伴随着偶尔短暂的高强度光的闪烁。
Most of the time the lasers are dark, producing areas of light with low intensities with the occasionally brief but brilliant flashes of high - intensity light.
大部分鱼都可以在低光条件下或在脏水里看见东西，还有一些可以看见中长距离的物体。
Most fish can see in low-light conditions or dirty water, and a few can see objects over moderately long distances.
很多人提议更有效的自然光，这大约占c 40城市能量消耗的五分之一，并且大部分都很旧，效率低。
Many propose more efficient outdoor lighting, which accounts for almost one-fifth of energy consumption across C40 cities and is mostly old and inefficient.
应用推荐