The exact relationship depended on certain constants that could only be found by experiment, and which were not yet known.

But there are certain constants in the form.

Like any typical taxonomy, a video game genre requires certain constants.

"In any large organization* xhere will be certain constants," he said.

But the life of the nation has certain constants.

He had discovered, at times to his sorrow and peril, that there were certain constants in all dimensions.

There were certain constants to being in this universe.

There were, he had found, certain constants in any dimension.

Yet there are certain constants, dictated by function and use.

As a deluge of memoirs begin to address the war in Iraq, certain constants emerge.