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Covering spaces are a fundamental concept in topology. Some typical examples can be seen in this previous post.
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荔湾区、番禺区纷纷被纳入高端商业的怀抱，打破了老牌天河区的垄断格局，届时两座万象城+两座太古高端商业+一座SKP，广州将形成不容忽视的高端消费集聚效应，也将带动城市层级的跃升。
Separate data published on Thursday showed the number of families living in temporary accommodation has also reached a new high.