麋鹿穿过冬天的冰雪，到达苏必利尔湖的皇家岛，在那里，它们没有天敌，自由繁殖。
Moose reached Isle Royale in Lake Superior by crossing over winter ice and multiplied freely there in isolation without predators.
在冰川深裂缝末端，最后形成了一个冰川湖，在这张图片上，湖泊被冬天洁的冰盖住了。
At the end of the glacier's deeply crevassed snout sits a glacial lake, coated with ice in this wintertime picture.
在阿拉斯加以及北美的五大湖地区，冬天的室外活动包括冰上钓鱼，打猎，越野滑雪以及雪地摩托。
In Alaska and the great lakes region of north America winter activities include ice fishing, hunting, cross-country skiing and snowmobiling.
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