Examine walls, floor, doors, staircases, and windows to make sure that the building is not in danger of collapsing.
仔细检查墙壁，地板，门，楼梯，和窗户，以确保他们不会坠落碎片，或者倒塌。
To prevent the cervical vertebrae from collapsing into one another, firmly press the forearms and wrists into the floor.
为了防止颈椎承受过大挤压，小臂和手腕要用力撑起来。
They joined the line of people in the fire escape and when they reached the15th floor heard the noise of the south tower collapsing .
他们立刻加入沿火警紧急出口撤离的人流，在到达第15层时，他们听到南塔倒塌的隆隆声。
They joined the line of people in the fire escape and when they reached the15th floor heard the noise of the south tower collapsing.
他们立刻加入沿火警紧急出口撤离的人流，在到达第15层时，他们听到南塔倒塌的隆隆声。
The demolition process of a 16th floor building in Harbin was monitored, and vibration velocity and frequency of ground particles were obtained during the blasting and collapsing process.
对哈尔滨市一幢16层楼房的爆破拆除过程进行了现场监测，获得了爆破和楼房倒塌过程中引起的地面质点的振动速度、频率等数据。
They joined the line of people in the fire escape and when they reached the 15th floor heard the noise of the south tower collapsing.
他们立刻加入沿火警紧急出口撤离的人流，在到达第15层时，他们听到南塔倒塌的隆隆声。
Exposed to such intense heat, both the exterior columns and floor beams began to weaken. Consequently, the upper floors caved in, collapsing the floors below.
在高热下大厦内外支撑体的强度被削弱了，结果了上层的塌陷并压垮了下层建筑。
I'm almost scared to admit this, but one thing has stopped me collapsing in a puddle of misery on the floor.
我实在很害怕承认这件事，但是有一件事促使我在一系列困难面前没有放弃。
I'm almost scared to admit this, but one thing has stopped me collapsing in a puddle of misery on the floor.
我实在很害怕承认这件事，但是有一件事促使我在一系列困难面前没有放弃。
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