Noun:

1. a check on work performance or product quality made at random times without warning;

   "spot checks ensure a high level of performance by employees"
   

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Spotti斯波蒂

1. The campaign against drinking and driving will include spot checks on motorists.
   在禁止酒後开车这一行动中要对司机突击检查。
2. The campaign against drinking and driving will include spot check on motorist.
   在禁止酒後开车这一行动中要对司机突击检查。