无色视觉

In the case of a colorless solution that is titrated directly, the endpoint may be observed visually as a change in color from canary yellow to amber.

当直接滴定无色溶液时，可以在视觉上观察到从淡黄色到红棕色的颜色改变。

Vision when the eye is adapted to levels of luminance below some hundredths of a candela per square meter; the rods are considered to be the principal active elements under these conditions.

调节眼睛以适应几百分之一坎德拉每平方米的亮度水平时的视觉情况。在这种情况下，杆状细胞被认为是主要的活跃成分。光谱是无色的。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。