There is no known method to carry it out quickly.

It is still the only known method of doing this, but for rather obvious reasons it has not made much progress.

All known methods have their problems, and the results of an election are often different from predictions based on a sample.

There was, however, no known method by which carbon-12 could be produced.

With the other known methods this system remains beyond the possibilities of modern technology.

This is not the time to 'try' alternate healings, but to allow the known method to stay its course.

Does our brother not thrive beneath the known method of healing?

The known methods are tried, and they will be true.

There is no known method for prevention of Rett syndrome.

There are no known methods of prevention or control.