His voice was still loud and urgent, but oddly low, dull, without variation.

While I was there she said it maybe 40 times, without variation.

Regardless, the climate in Nechako remains constant without much variation.

Without phenotypic variation, there would be no evolution by natural selection.

A handsome lot, she said to herself, but without much variation.

The night bombing pattern was maintained, almost without variation, for the next six months.

Children must learn the dance exactly as taught without variation.

Since then, the same share of deals has gone to the same place, almost without variation.

Without variation, movement would not exist, and, by extension, time.

Her voice wasn't very old, but it was without variation, a tired monotone, as if there were nothing worth saying.