Memorizing "mitigate" is useless if you don't know how to use it. The audio dialogues and lectures place vocabulary in real academic and social contexts, so you learn how words actually fit together.
The Cambridge Vocabulary for IELTS Audio is an audio companion to the Cambridge Vocabulary for IELTS book. The audio material includes 12 units, each covering a range of vocabulary related to a specific theme. The audio tracks are designed to help learners improve their listening skills, pronunciation, and vocabulary. cambridge vocabulary for ielts audio