A laser can light the surface of the moon with only a two-mile-wide circle of light . 激光照射在月球表面上的光照范围只是一个直径为两英里的圆。
We exposed both nocturnal and diurnal, or day-active, rodents to different light levels . 我们既把夜间活动的、也把日间活动的啮齿动物置于不同等级的光照环境中。
Grass does not look green under sodium lighting because there is no green light for it to reflect . 青草在钠光照射下并不呈现绿色，就因为钠光中没有绿光成份可以被它反射。
These experiments left little doubt that appropriate light changes could override signals from the biological clock . 这些试验使我深信不疑，适当的光照变化能够克服来自“生物钟”的信号。
It is generally assumed that the photic zone extends to the depth at which the light intensity is reduced to 1% of the value at the surface . 通常认为光照带伸展到光强度降低为表面值为1的深度。
On the other hand, plants raised from seed with eight hours of light a day flower so rapidly that they never develop into vines . 另一方面，每天接受8小时光照的实生苗却迅速开花以至根本就不抽藤。
A siiver iining of hope fiashed into my iife 一道闪亮的希望之光照亮了我的生活！
Christmas : a light has shined . . our joys increased 真光照亮喜乐倍添之一03 12 06
A siiver iining of hope fiashed into my iife 一道闪亮的希望之光照亮了我的生活！
Lighting a surface can be a costly operation 光照一个表面可以是一个昂贵的操作。
