上周三，巡逻的无人机发现了澳大利亚海边冲浪者旁边的大白鲨，即时提醒他安全回到了岸边。请看本报周五的报道：

Drone operators saved an Australian former surfing champion from a potential shark attack off New South Wales on Wednesday.

Matt Wilkinson was surfing at Sharpes Beach at Ballina when the team at Surf Life Saving NSW noticed a 1.5-meter white shark just behind him, the organization said in a press release.

The NGO flies drones over popular surf spots to keep an eye out for sharks, and on this occasion it helped Wilkinson make a lucky escape.

Wilkinson, 32, said he heard the shark warning over the drone’s speaker but was surprised to find out afterward how close the shark had gotten to him.

报道中的keep an eye out就是“密切注意”的意思。例如：

Can you keep an eye out for the taxi and let me know when it arrives?

你能不能帮我盯着点儿，出租车到了就叫我一声？