冬天，空气干冷，寒风凛冽。

It was winter with cold air and strong wind.

冬季干冷，时有风沙天气。

Dry and cold in winter, when weather and sandstorms.

南方干冷，大部分被冰冰盖笼罩。

The south was cold and arid, with much of the region frozen under ice caps.

主要支配的影响是干冷气团之流入。

The major controlling influence is the inflow of a cold, dry, air mass .

暴雨区西南侧中低层存在干空气侵入，使中低层干冷空气迅速向对流风暴发生区输送，形成逆温层。

The dry air incursion of middle level of western rainstorm make the cold dry air to be rapidly trans port the convective strom occurrence area, which leads to thermo-inversion layer.