Complex sentence: Platforms on the MTR are above the rail for the Tung Chung Line and Airport Express (Redevelopment of Kowloon Station, 1995, HKU Scholars Hub), and the height of those on other urban lines built by MTR is also.
Split into simpler sentences: Platforms on the MTR are above the rail for the Tung Chung Line and Airport Express. The height of those on other urban lines built by MTR is also.