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紧急情况的延长
1、extension of L───L的延伸
2、extension───n.拓展；延伸；接发；（医学）牵引；（计算机）拓展名；（逻辑）外延
3、emergency telephone───应急电话；紧急电话
4、extension tube───n.伸缩管
5、emergency meeting───紧急会议
6、emergency───n.紧急情况；突发事件；非常时刻；adj.紧急的；备用的
7、emergency service───应急服务；应急无线电通信业务；应急供电[检修]，应急无线电通信业务
8、emergency workers───应急人员
9、lengths of extension cords───延长线长度
1、extension provides an opportunity to improve the relationship between the school complex and the public space in the street currently a blank wall of the emergency shelter.───扩建给学校和城市公共空间提供了改善关系的契机——有一个可供紧急避难的场所。
2、Developing an efficient Railway Emergency Communication System was important to reduce the loss of accident, prevent the extension from the disaster.───开发高效的铁路应急通信XiTong有利于减少事故损失，防止灾害扩大，这对于保障铁路的运输安全是至关重要的。