a large, fast fall in air pressure that leads to the forming of a bomb cyclone (= a severe storm that develops very fast)

Four regions where explosive cyclogenesis frequently occurs are the Northwest Pacific, the North Atlantic, the Southwest Pacific, and the South Atlantic. 经常发生爆炸性旋生的四个地区是西北太平洋、北大西洋、西南太平洋和南大西洋。