Before the audio starts, look at the gaps. Does the sentence need a noun (e.g., "mini-city"), an adjective (e.g., "enclosed"), or a number?

Used to describe how transport hubs (trains/buses) are built directly into the terminal design.

You can find the "Airport Design" practice test on IELTS Training Online , which includes the audio script for Section 4.

When preparing for this topic, familiarize yourself with these common terms found in the test: