Every two and a half minutes a bell and the screech of whistles announced the departure of one of the light monorail trains which carried the lower caste golfers back from their separate course to the metropolis.
There are no more uses of "metropolis" in the book.
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The town is on it’s way to becoming a 21st century metropolis.
The first request I made, after I had obtained my liberty, was, that I might have license to see Mildendo, the metropolis;