There have been several natural disasters in several parts of the world with major destruction and damage. Venice experienced a heavy rainfall that led to serious flooding in most parts of the city. This lesson uses the Chinese idiom 洪水猛兽 to describe how heavy floods caused a major disaster in the city. 最近，世界各地都有不同的自然灾害发生，对各国都造成了很严重的损失，威尼斯更是遭遇了一场暴雨，导致大部分城市被淹。本课用洪水猛兽这个成语引入主题，意思是比喻极大的祸害。 最近，世界各地都有不同的自然災害發生，對各國都造成了很嚴重的損失，威尼斯更是遭遇了一場暴雨，導致大部分城市被淹。本課用洪水猛獸這個成語引入主題，意思是比喻極大的禍害。