spot-check

详细解释:vt. 抽查
vi. 抽查

词型变化：

动词过去式:spot-checked过去分词:spot-checked现在分词:spot-checking第三人称单数:spotchecks

英语解释：

名词 spot-check:

a check on work performance or product quality made at random times without warning同义词：spot check