用undercover operation造句子，“undercover operation”造句

1: Surprises: Andy and Nick go missing during an undercover operation in the Season 4 premiere.

Officers had tailed the gang during a major undercover operation.

In every undercover operation, there is a tipping point, a moment when the bad guys move from suspicion to trust.

Long-term, intelligence-based and undercover operations resulted in many prosecutions.