And he could test for only one at a time.

Usually scientists want to test only one thing at a time.

It would take about 9 days to test every possible key at that rate.

But obviously he'll have to test the water at some point.

The company has been allowed to test the plant at low power.

All players are tested at the beginning of the season.

The children were first tested in 1975 at age 7.

The students were tested at the beginning and end of the study.

But it's likely the issue will be tested at some point.

His skills have never been tested at high levels of national office.