An early warning system could only give hours notice, not the days that would be needed to prepare an evacuation.
预警系统可能只能提前几小时发出通知，而准备一场撤离是需要几天的时间。
The impact of evacuation and relocation on those with health or functional impairments can be tremendous .
撤离和重新安置对这些健康状况欠佳或身体残疾的人影响极大。
I ordered the evacuation of all Americans and sent troops to guarantee their safety.
我下令撤离所有的美国人，并派部队去保证他们的安全。
However, it is not only harmful to escape, but also beneficial for smoke to spread quickly to other floors if the smoke moves into the vertical escape evacuation routes while it is on fire.
