陡峭地，陡然地，出乎意料地；

1. 陡然地：Sassafras:檫树 | Tricothecene:(化学术语)单端孢霉烯 | Precipitously:陡然地

2. 迅速：backlog积累,积压而未交付的订货,未完成订单/未结订单 | precipitously迅速 | bug病毒

3. 位於峭壁上的：6. Pentagon 五角大楼 | 7. precipitously 位於峭壁上的 | 8. sectarian a.宗派的,派系的

1. abruptly
    in a precipitous manner

    e.g. the mountains rose precipitously from the shore

2. very suddenly and to a great degree

    e.g. conditions that precipitously increase the birthrate
           prices rose sharply

    Synonym: sharply