你说的地方没有错.错的应该是 as 这个词,不该有.还有后面的两个形容词不能都有 ly .应该是:
We are getting very clear eyewitness accounts from people who were inside that club at the time,and what they are saying is that the flames spread extremely quick.
我们正从当时身在俱乐部内的人那里获得非常清晰的目击者陈述,而他们所说的是,火焰蔓延的非常迅速.