It was a long, chilly tromp through the swirling night .

在冰天雪地的夜晚，走这么路可不容易。

In this area the climate changes from cool, humid, and subpolar to the frozen conditions of Antarctica.

这个地区气候变化很大，副极地气候的凉爽湿，到南极洲的冰天雪地。