缉私船

例句：

1. 1. The customs boat patrolled the harbor to preventillegal trade.
   海关巡逻船在港口巡逻以防止非法贸易。
2. 2. The customs boat wasequipped with advanced surveillance technology.
   海关巡逻船配备了先进的监控系统。
3. 3. The customs boat wasa crucial tool in maintaining international trade security.
   海关巡逻船是维护国际贸易安全的关键工具。