DNV

例句：

1. 1. The ship was inspected by the DNV to ensure compliance with safety standards.
   这艘船被船级社检查，以确保符合安全标准。
2. 2. The DNV is responsible for ensuring that all ships meet international maritime standards.
   船级社负责确保所有船舶符合国际海事标准。
3. 3. The DNV has issued several reports on the environmental impact of shipping activities.
   船级社发布了几份关于航运活动对环境影响的报告。