He had clambered inside with his extension lamp and had settled to the work of tightening.

他携带着长颈灯进入了机器内，并开始拧紧螺栓的工作。

He turned back to the manhole opening. It was nowhere to be seen. The extension lamp, which he had abandoned in his ramblings in favor of the pocket flash-light, was gone!

他回过头继续打开人孔，什么也看不见，他丢弃在杂务中的长颈灯没有了，这盏灯可以作为便携式闪光灯。