Because of this the standards have varied over the past few decades.

Good behavior is relative, of course, and standards vary from one family to the next.

Such standards can vary from one jurisdiction to the next.

Cultural standards vary a great deal on what is considered feminine.

Specific standards for these four criteria may vary from one school to the next.

The standard of private medical facilities can vary throughout the island.

These standards vary based on the possible recipients of the funds.

In the Scandinavian countries, standards vary from one country to another.

Standards vary but you should be able to get a good idea of the approach from the syllabus.

In publications, the standards are slightly different, and vary by journal.