cloudburst的复数形式怎么拼写？

A patch of red cloudburst over the horizon , blood - red, and glowing.天边绽出一小片红霞,血红、发亮.A black cloudburst was drenching Siena at midday.中午,一场天昏地暗的暴风雨在锡耶纳上空倒下来.All of a sudden a storm broke – a cloudburst.突然暴风雨来临了—一场常见的大暴雨...

n.（突然的）暴雨，倾盆大雨...

cloudburst的音标：cloudburst的英式发音音标为：['klaʊdbɜ:st]cloudburst的美式发音音标为：['klaʊdbɜrst]...