你可以降低灯光强度，但物体表面仍然会偏亮。

You can decrease the intensity, but the surfaces will always be lighted a tad bit.

youdao

而利用透镜和反光镜的辅助设备可使灯光强度倍增。

Refinements in lenses (e. g. , the Fresnel lens) and reflectors made it possible to substantially increase the light's intensity.

youdao

黑暗的场景不等于昏暗的场景。 如果你渲染一张夜景或是昏暗的室内场景，别只把灯光强度调小就完事儿了。 降低填充光强度，甚至加一层蓝色给它降温，这都行。 但别忘了给场景中某些元素足够的光照。

Dark scenes do not mean under-exposed scenes – If you have a night-time scene or a dark interior scene, don't just turn down the intensity of all the lights and call it a day.

youdao