So the ice over military ties may not thaw as easily as in previous cold snaps.

所以军队关系上的坚冰不会如以前寒流中的那样容易融化.

Central Greenland experienced cold snaps as extreme as six degrees Celsius in just a few years.

格陵兰中部经历过多次短冷期,都是在短短数年内便降至6℃的低温.

As to what caused these cold snaps, the ever-popular suspects are ash and dust kicked up by either astronomical impacts or massive volcanism.

至于气温突降的原因，最具代表性的观点认为是由于天体冲撞或大规模火山喷发激起的火山灰和尘土。

Correlations don't prove anything, he added, and plenty of droughts, cold snaps and other climate events are associated with no major cultural events at all.

他也补充道，这些对应关系并不能证明任何事情，而且也有许多旱灾、降温以及其它气候事件并不能和什么重大的文化事件联系起来。