spot check

n

• ① 抽样检查;抽查
  • A spot check showed that at least five percent of the oranges were contaminated.一项抽查显示那些柳橙至少有百分之五受到了污染。
  • The campaign against amphetamines will include spot checks on high school students.反安非他命运动将包括对中学生的抽查。