他站在那个小平台上，当消防员顺着竖井垂下来，把安全带扎到他腋下时，他精疲力尽，几乎说不出话来，但看起来完全没有受伤。
He was standing on that ledge, exhausted and almost speechless but otherwise apparently unhurt, when a fireman reached down and secured a harness under his arms.
叙述了对红透山铜矿一竖井由于多次延伸，多次更换提升容器，导致安全间隙不足而进行的技术改造。
A shaft of Hongtoushan was deepened for many times and the lift container was changed for many times, thus, the safe space was not big enough.
为防止含生物膜的砂洲生态系统内产生浓沼气引发爆炸，在该处设竖井 和活动盖，人可以进去检测，保证安全运行。
In order to prevent generating thick biogas in the shoalbank ecosystem to cause explosion, a silo and a movable cover are arranged, people may enter and detect to guarantee safe operation.
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