spot audit的用法和樣例：
例句
- A spot check showed that at least five percent of the oranges were contaminated.
一項抽查顯示那些柳橙至少有百分之五受到了污染。 - Shenzhen-made Nokia mobile phone batteries were found defective during a recent spot quality check of mobile phone batteries nationwide by the nation's quality watchdog.
近日，在國家質檢總局發布的全國手機電池抽查結果中，深圳產諾基亞電池上了不合格黑榜。
