passage of time

So how do we know record the passage of time?

I did not know What passage of time it was.

The difference has everything to do with the passage of time.

In my view, despite the passage of time, the evidence is not likely to have run cold.

This can only be done by the passage of time.

Without language, there is no way to understand the passage of time.

Days passed, perhaps; he had no way to mark the passage of time.

In a sense, the project measures the passage of time.

Some things did not change no matter the great passage of time.

The passage of time has changed the way they see each other and themselves.