The night was perfectly still, and the air so dry and pure that it gave little sensation of cold.

夜晚万籁俱寂，空气干燥纯净，几乎没有寒冷的感觉。

After some minutes a sharp hissing reached my ears. I felt a distinct sensation of cold rising from my feet to my chest.

过了几分钟，一声尖锐的呼啸传进我的耳朵。我感到好像有一股冷气，从脚底涌到胸部。