In Lake Superior, shipping companies have kept records of ice formation and breakup since 1857.

在苏必利尔湖，船运公司自1857年以来一直保存着冰层形成和破裂的记录资料。

[Joe] That can lead to strange ice formations called dragon's breath.

- [乔] 这可以导致称为龙息的奇怪冰层。

But the conditions there are not really favorable for large-scale ice formation.

但那里的条件并不真正有利于大规模冰的形成。