light-off的意思|示意

He fell asleep with the light off.

灯关掉的状态下，他睡熟了。

Basically the light bouncing off all these objects close to earth is brighter than what's coming from the stars.

大体上，所有靠近地球的这些物体所反射的光都比来自恒星的要亮。

Some very important discoveries have been made by this technology, especially you consider that some objects in space give off radio waves but don't emit any light.

运用这项技术后，已取得了一些非常重要的发现，尤其是考虑到太空中的一些物体会发出无线电波，但不会发出任何光。

Turn your reading light off when taking off or landing at night. Your eyes will be more adjusted to the dark if you have to leave the plane in a hurry.

如果你不得不匆忙地离开飞机，在晚上起飞或着陆时关掉你的阅读灯，这会使你的眼睛更适应黑暗。

However using light to find one's own way around requires vastly more energy, since the eyes have to detect the tiny fraction of the light that bounces off each part of the scene.

然而，利用光来找到自己的方向极大地需要更多的能量，因为眼睛必须检测从场景的每个部分反射的光的极小部分。

Sometimes even a light touch on the face is enough to trigger off this pain.

有时甚至在脸上轻摸一下也足以引发这种痛苦。