Low Blue Light

If you must use a night-light, pick a 'low blue' one (lowbluelights.com).

如果你必须要开着灯睡觉，那就换个发出淡蓝色灯光的夜灯吧。

It is an important term in photography to denote the quality of a light source. Sources rich in red light have a low colour temperature and sources rich in blue light have a high colour temperature.

色温是光源质量的指示，对摄影方面很重要。低色温的光源的光源偏红，高色温的光源偏蓝。

To fix this, a light blue paint with low opacity representing the translucent material was added above the ramps.

为了修正这个问题，我在坡道上增加了一种低透明度的浅蓝色来代表半透明材质。