spotn.地点；场所；职位；污点；斑点；少量；聚光灯；插播节目adj.现场的；现货的；插播的v.（使）产生污渍；玷污；认出；用灯光照射spot testn.抽查；当场测试

1. The date in this dissertation is from a spot check of households in the main city zoon of Chongqing.
   此实证分析的数据来自对重庆市主城区居民家庭的抽样调查。