1. The heavy rain brought disastrous floods.
    大雨带来了灾难性的水灾。

2. A lawyer is required to write the document, for mistakes in language — even a misplaced preposition — can be disastrous.
    应当由律师起草文件，因为文字错误——哪怕只是介词放错了位置——也可能是灾难性的。