Depressions are areas of ____ pressure which form when air ____.  They are smaller than anticyclones and spin in an ____ direction.  They usually move quite quickly across Britain from ____ to ____.  Each depression brings two periods of rainfall; ____ at the warm front and ____ at the cold front.

Depressions

由
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?