词汇与表达：关于自然灾害

tornado
More than 60 tornadoes tear（这个词是不是用得很好） through 5 states in 2 days.
The entire viliage was obliterated by the tornado.
obliterate
记忆技巧：ob 反对，否定 + liter 文字，字母 + ate 使 → 去掉文字 → 擦掉
Everything that happened that night was obliterated from his memory.  [url=][/url]   

那天夜里发生的一切都从他的记忆中消失了。