This is the 6578th most frequent Chinese word.
映着
"映着" means "to reflect" or "to be illuminated by."
In this sentence, '映着' is used to describe the action of the lake reflecting the image of the green mountains on its surface.
湖水平静，映着周围的青山。
The calm lake reflects the surrounding green mountains.
Here, '映着' conveys the effect of sunlight shining onto the window glass, causing a visual transformation.
夕阳映着窗玻璃，染成了一片金黄。
The setting sun illuminates the window glass, turning it a golden hue.
In this example, '映着' figuratively describes how her smile embodies or captures the essence of the warm evening glow.