| And then, as the sky slowly darkens, dark silhouettes slowly start wandering along the city-centre sidewalks. |
| If anything more darkens the mood of our brooding Chancellor it is warnings such as these. |
| As the brilliant Sun is covered by the Moon, the pearly corona flashes into view, the sky darkens, and all of nature seems to come to a halt. |
| But the poet's vision darkens apocalyptically in The Lice, which seems written under the shadow of planetary extinction. |
| As the obscuration of the Sun increases the sky darkens, although it never gets as black as dead of night. |
| And everyone understands how it feels to watch birds coming in to roost as a sky darkens. |
