A grey day dawned upon the sleeping city.

一个灰蒙蒙的白昼降临于这座沉睡的城市。

The sky was dull, with a foreboding of rain.

天空灰蒙蒙的，好像要下雨了。

In this weather the cliff face was a foggy drop into infinity.

在这种天气条件下，雾蒙蒙的漠无限之中。

Since it was hazy, we couldn't see the mountains.

因为是雾蒙蒙的，所以我们看不见山脉。