模仿句子：But we start with someone who spent two years patrolling a border. When Morten Hilmer served in the Danish army, he was sent to join a special force called the Sirius Patrol. They used dog sleds to protect the country's interests on the frozen northeastern coast of Greenland. 

翻译：我们的第一位嘉宾曾在一处边境巡逻两年。当莫顿·希尔莫在丹麦军队中服役时，他被派往一支名为“天狼星巡边队”的特种部队。他们利用狗拉雪橇，在天寒地冻的格陵兰岛东北海岸保护本国的利益。