" C " street is three times as far from the light as "A" street; hence it will be nine times darker there, for 3X3 = 9.

C街道距光源的距离是A街的3倍，那么光线的昏暗程度将是A街的9倍，因为3X3 = 9，也就是说C街的光照强度只等于A街的1/9，如果这里要看清书上的字，字体就要扩大九倍。

youdao

A ratio of less red and to more far-red light would cause a reaction from the plant.

较少红光和较多远红光的比例会引起植物的反应。

youdao

The thunder sounded far to the east, moving from them in its red wreaths of light.

粼粼雷声从遥远的东边传来，又挟着红色的冠形闪电离他们而去。

youdao

It is not far from where remains of the oldest known human ancestors, Luci and Ardi were found, shedding light on the origins of humanity.

VOA: standard.2009.12.14

He was a young man full of earthly vigor who had a wisdom of his own, and may the earth in which he rests, not far from here, lie light on his bones, and bring the news, each year, of the return of the sun and of the frost.

NEWYORKER: Bear Meat

"I don't think that we are too far away from him being given the green light for him to go and play cricket in much the same way that he was at the start of the season, " Watkinson said.

BBC: Vincent blasts ton in Lancs romp

If you change your focus from near to far, the shift in light quality is almost imperceptible.

WSJ: The Petzl Nao: A Smarter Light | At Play