It was an 18th century building, substantially altered in 1934.

Potential candidates must not have been altered substantially since they were built.

The film's story will now be altered substantially and work is currently going on in this area.

Both instruments have been substantially altered in more recent years.

The home, he added, "will not substantially alter the nature and character of the area in question."

Despite the changes in use, the building's exterior has not been altered substantially.

It does not appear to have been substantially altered since its construction.

The route has not been substantially altered since that time.

The great majority of these homes remain today, although most have been substantially altered.

The code was written in 1957 and has not been substantially altered since.