To his surprise he didn't feel too weak. Light-headed certainly, and with a sense of unreality, but able to walk.

令他惊讶的是，他并没有感觉太虚弱，虽然头晕，并有些不真实感，但能走路。

I had a deep felling of unreality.

我深有一种不真实的感觉。

Despite the crisis, a sense of unreality prevails.

尽管危机确已存在，但是很多人眼里却有一种虚幻感。

The lingering dusk fuels a faint air of unreality.

挥之不去的黄昏更为这个城市增添了一种淡淡的超现实气氛。

The media have also abetted the feeling of unreality.

媒体也在一旁对这种非现实感推波助澜。