回複：借馬下人君之言說說對Fill這個字的理解： Fill給人一種質感和動感，比單純“照亮”更加給人一種聯想。

Xiaoman was right.  A space can be filled with light or light can fills a space.

But when 'fill' is used for light it seems to emphasize the state(充滿）.  ”灑滿“ on the other hand parenthesizes the action--illuminating.

Not sure is other people perceive the same.  I can be wrong.  In the fact I was wrong already when I said that light does not fill a volume.