The few Patronuses people had managed to conjure faded away into silver mist, leaving the room looking much darker than before.

人们召唤出来的为数不多的几个守护神渐渐消退，变成了银色的薄雾，于是屋里显得比刚才暗多了。

It grew larger and larger and then faded away into the air.

它变得越来越大， 然后消失在空气中。

Littleby little, however, and as the war became more intense and widespread, his image was fading away into a universe of unreality.

然而，随着战争变得更加激烈和广泛，他的形象逐渐消失在一个不真实的世界中。

This he began to read with a smile of amusement upon his face which gradually faded away into an expression of intense interest and concentration.

他开始阅读这篇文章时， 脸上挂着愉悦的微笑， 后来逐渐消失， 变成了一种浓厚的兴趣和专注的表情。