His suspicions seemed to be borne out after careful testing.

By a system of careful testing, the brightest children were selected from all classes and trained to be governors.

The new rules' design assumes what only careful testing can confirm, that mad-cow disease is probably very scarce in this country.

I can presumably turn them up slightly with some careful testing.

Serious fights between unfamiliar adversaries usually began with a little careful testing.

A causative agent may not be isolated in approximately half of cases despite careful testing.

On the other hand, in the absence of careful testing, a drug like thalidomide may be sold.

No careful testing of the political waters back home.

In four or five generations, with careful testing, they could become Kolnari of the lowest caste.

The use of additives is, after careful scientific testing, a technological necessity in many cases.