coast guard

例句：

1. 1. The coast guard is responsible for monitoringthe safety of ships at sea.
   海岸警卫队负责监督海上船只的安全。
2. 2. The coastguard was called to assist in the rescueof a distressed boat.
   海岸警卫队被召来协助营救一艘遇险的船。
3. 3. The coast guard patrols theshoreline to prevent smugglingand illegal fishing activities.
   海岸警卫队巡逻海岸线，防止走私和非法捕鱼活动。