The mast bell has been removed. The National Oceanic and Atmospheric Administration estimates that the remaining structure is likely to collapse within the next 50 years.

美国国家海洋和大气管理局估计，剩下的结构很可能在未来50年中分崩拆离。

youdao

And then all of a sudden that structure is untenable, and the weight starts bearing down on floors that were not designed to hold that weight, and you start having collapse.

而下面的钢筋本来不是被设计来承担那么多重量的，于是就开始坍塌了。

youdao

Once you've cleared fallen debris - or if a structure is liable to collapse further - you should shore it up with timbers.

如果掉落残骸已经清除或者建筑物可能进一步倒塌，应用木材将其支撑起来。

youdao

It was not immediately clear what caused the structure to collapse, but Mr. Raghuvanshi said the building structure was weak.

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Jesus Murillo Karam said there was risk of structure collapse in the last two of the 39 sectors of the affected area.

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