Complex sentence: It was formerly the only underground MRT station without the air-conditioning and Full-Height Platform Screen Doors between 1987 and 2008, and has since got its North South Line platforms separated to make space for the linkage to Circle line.
Split into simpler sentences: It was formerly the only underground MRT station without the air-conditioning and Full-Height Platform Screen Doors between 1987 and 2008. Now, it has since got its North South Line platforms separated to make space for the linkage to Circle line.