a vast expanse of whiteness

• 白茫茫

a vast expanse of whiteness的用法和样例：

例句

1. A thick grey mist was all around us.
   四周尽是白茫茫的浓雾。
2. After a whole night's snow, the field is all white.
   一夜风雪过后，原野里一片白茫茫。