mini还是全文听写模式，很多童鞋可能进来看到【专八】可能会有点胆怯，刚开始是会感觉到有点吃力哦，但这就是专八。希望大家可以耐心的认真听写O(∩_∩)O~

hints:
World Trade Center
To be exact, many lives lost, but many saved. If the towers were never going to stay standing, why all the extra support? Was it futile after all? Suppose for a minute that the towers hadn't been built with all that reinforcement - that they'd collapsed a few minutes after being struck. The rubble at the side still would weigh a million tons. The site still would have taken as long. But how many more people would have died? It's a figure no one wants to calculate. Thankfully, because a team of engineers and architects made the Trade Center as safe as it could possibly be. To sum up, I first recalled the disastrous episode of the fall of the World Trade Center, then I explained how extraordinary the design is. After that, I summarized the reasons of its catastrophe collapse. That's for today.