The sun was sliding quickly down the sky towards evening, and the mists were growing steadily thicker as the temperature fell.

The mists were growing steadily thicker, and a light snow had begun to fall.

The fog grew steadily thicker, until at last it blotted out the countryside completely, and turned us into Chinese shadow puppets.

While the ramparts had been melting, the jungle beyond them had been growing steadily thicker.

Winter's frosting grew steadily thicker on the ground.

The fog grew steadily thicker as they loaded their packs aboard the barge.

The stars spread steadily thicker and brighter over the viewscreen.

The circle of would-be witnesses around the testing area grew steadily thicker, but at least only a few of them were armed.

The fog grew steadily thicker as a light rain began to fall.

He did notice that the radio traffic got steadily thicker on the nonstandard band the robots used.