According to: http://busyteacher.org/16302-ted-building-a-park-in-the-sky.html

1. elevated rail line = the rail line
which goes above the ground

2. to abandon = to leave

3. to demolish a building = to destroy a
building (usually old) > demolition

4. to preserve a building = to save, to
protect

5. a board meeting = a meeting of the
council, of the heads of an
organization/community

6. inspired by a view =
……………………………

7. economic value =
……………………………

8. to realize =
……………………………

9. to transform (a place) = to change
completely

10. to interact (with people) = to
communicate, to have connections