提示：点击例句中的单词，就可以看到词义解释

Who they are : educated user base , first-tier cities

用户群：受过良好教育的群体，一线城市居民

In most cities our public school system is a debacle .

在大多数城市，我们的公共教育体系就是个大败笔。

In greece , areas outside of cities do not have zoning laws .

希腊城市以外的地区没有分区规划法律。

Winner : america 's other bankrupt cities

赢家：美国其他破产城市

Who they are : educated users in first-tier cities

用户群：一线城市受过良好教育的用户