An emergency radio beacon helped rescue three climbers on mount hood and a big dog kept them warm. the group endured a foul and a cold night before being found.

一个无线电导航台帮助救援了三名被困于胡德山的登山者。他们被发现之前，依靠一只看门狗取暖，熬过了一个恶劣而又寒冷的夜晚。

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It would appear from the activation of the emergency position indicating radio beacon (EPIRB) that something has happened.

紧急无线电示位标(EPIRB)的激活显示他们似乎是遇到麻烦了。

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The alarm set off by the men is known as an EPIRB - an Emergency Position Indicating Radio Beacon.

BBC: NEWS | UK | England | Bristol/Somerset | Stricken rowers rescued by ship

The three fishermen's vessel didn't have an Emergency Position Indicating Radio Beacon, which transmits a distress signal anywhere in the world through a satellite system, the navy said.

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Meanwhile, the coastguard was not alerted to the Purbeck Isle's plight for seven hours as it was not fitted with an emergency position-indicating radio beacon or similar distress signalling device.

BBC: Purbeck Isle deaths report: Life raft failures blamed