background of water environment

例句：

1. 1. The story is set in the 19th century.
   这个故事发生在19世纪。
2. 2. She's always been interested in history as her background.
   她一直对历史很感兴趣，因为她的背景是历史。
3. 3.The painting has a rich background of colors and textures.
   这幅画色彩丰富，纹理细腻。