Flemming Dahlke, a marine biologist at the Alfred Wegener Institute in Germany.

德国阿尔弗雷德·韦格纳研究所的海洋生物学家弗莱明·达尔科说到。

Rainstorms are becoming more intense in California and around the world, says University of California Davis hydrologist Helen Dahlke.

加州大学戴维斯分校的水文学家海伦·达尔克说，加州和世界各地的暴风雨正变得更加激烈。