Those in the dark are in no position to light the way for others.; Persons in the dark cannot light the way for others.

以其昏昏， 使人昭昭是不行的。

《新英汉大辞典》

When the sun goes down the solar trees will return to their original position to give off a full spectrum of light to the street and pedestrians below.

日落后“太阳树”会回复到最初的位置，发出全光谱光线，为下面的街道和行人提供照明。

youdao

A directional light doesn't have a position, only a direction.

定向光没有位置，只有方向。

youdao

A red light means get into position. Yellow light means ready.

VOA: standard.2009.09.10

And if we do, in fact, hit it with light to get the electrons off, it will go back to the straight up in position, or if it gets knocked hard enough it does that, too.

而且如果我们这么做，事实上，用光轰击它以逐出电子，它就会在原位置沿直线返回，或者如果它被撞击的足够猛烈,也会出现上述现象。

麻省理工公开课 - 化学原理课程节选

"My position is to reconsider our current position in light of the most recent scientific data to ensure that the current position that Palau takes will not lead to the depletion and extinction of whales, " he said.

BBC: Palau pioneers 'shark sanctuary'

There is, of course, a natural tension between the need to control IT spending and maintaining a strong competitive position in light of new technologies.

WSJ: The Experts: What Is the No. 1 Technology Issue Facing Companies Today?

It added that the burgers were not initially withdrawn but the board had "reviewed its position in light of more recent media coverage" and began taking frozen burgers from school meals' menus from Wednesday.

BBC: Burgers recalled from NI schools are 'clear of horse DNA'