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。

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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。

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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。

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Jeremy Bush frantically tried to rescue his brother by standing in the hole and shoveling away rubble until police arrived and pulled him out, saying the floor was still collapsing.

CNN: Home of Florida man devoured by sinkhole to be demolished

Bush frantically tried to rescue his brother, by standing in the hole and digging at the rubble with a shovel until police arrived and pulled him out, saying the floor was still collapsing.

CNN: Florida calls off search for man swallowed by sinkhole

Bush frantically tried to rescue his brother, Jeff Bush, by standing in the hole and digging at the rubble with a shovel until police arrived and pulled him out, saying the floor was still collapsing.

CNN: A loud crash, then nothing: Sinkhole swallows Florida man