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In total there are 10 separate investigations – or modules as they are called. So far only two, looking at pandemic preparedness and government decision-making, have been completed.
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（新华社北京2月25日电 记者朱基钗、胡浩、丁小溪、高蕾、胡梦雪）
Despite the physical and emotional demands of the job, McKenzie says nothing beats the incredible experiences he's had - as well as the satisfaction of contributing to environmental research.