1. The patrol plane flew over the coastline to monitor for any suspicious activity.
巡逻飞机飞过海岸线，监视是否有可疑活动。

2. The military uses patrol planes to survey enemy territory and gather intelligence.
军方利用巡逻飞机勘测敌方领土并收集情报。

3. The patrol plane circled the area, scanning for any signs of illegal fishing.
巡逻飞机绕着区域盘旋，搜索任何非法捕鱼的迹象。

4. The patrol plane's mission is to ensure the safety and security of our borders.
巡逻飞机的任务是确保我们边境的安全。

5. The coast guard relies on patrol planes to assist in search and rescue operations.
海岸警卫队依靠巡逻飞机协助搜救行动。

6. The pilot skillfully maneuvered the patrol plane through stormy weather conditions.
飞行员熟练地操纵巡逻飞机穿越暴风雨的天气条件。